Questions tagged [fruit]

Fruits develop from the flower of plants and hold the seeds. They are the way of plants to distribute their seeds.

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39
votes
1answer
28k views

Why does a coconut have exactly three "holes"?

Why do coconuts have exactly three "holes", as seen in this picture? A theory says: As coconut is a sibling of palm, somehow long time ago, three palms were in a same husk. Based on evolution theory, ...
30
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1answer
8k views

Why are many fruits sour?

Many fruits (like apples, berries, citrus fruits etc.) contain high levels of organic acids, especially malic acid and citric acid. Are there any evolutionary functions of those acids in ripe fruits? ...
28
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3answers
8k views

Is a walnut a nut or a drupe?

We've been learning about fruits (and the various categories thereof) in class; among them we have the nut and the drupe. My textbook differentiates between those terms as: Nut: It is a single-seeded ...
21
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3answers
6k views

Why are sugars in whole fruits not digested the same way sugars in juice are?

In this paper of the WHO, it is claimed that we should limit our consumption of free sugars: WHO recommends a reduced intake of free sugars throughout the lifecourse. [...] Free sugars include ...
21
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1answer
22k views

Why do plants fruit?

This is a two-part question: What is the point of fruit if not to be eaten? It’s my understanding that organisms will adapt to survive and thrive. I understand that being eaten can spread seeds, but ...
19
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1answer
2k views

What kind of fruit is this?

Just spotted this fruit while walking to school. It's the size of a small coin.The taste is almost sour and tangy and somewhat sweet (I only tried one of them and very little of it). I admit, I've ...
18
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1answer
2k views

What is the gas inside a Capsicum pepper, and how does it get there?

Every time I make fajitas, I cut into bell and chili peppers and notice how hollow they are. I always think to myself: what is the gas inside this pepper, and how does it get there? Perhaps Capsicum ...
15
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3answers
834 views

Why do some fruits have a much wider range of acceptable sizes than others?

Some fruits such as pumpkins can grow to be 100 lbs. Under different conditions, the same variety of pumpkin can produce a 15 lb. fruit. Both plants are healthy, and look the same except for their ...
12
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3answers
1k views

Why are fruits so large compared to their seeds?

Why do many plants produce such large fruits(apples and strawberries,for example) if those contain only relatively small seeds?
10
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3answers
1k views

Can anyone help to identify this fruit?

It stays the same color when ripe. It's about the same size as a pear. Grows in sub tropical climate of Meghalaya, India.
9
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1answer
715 views

Black bumps on the cut surface of an avocado

I cut an underripe avocado in half and put half of it, without the pit but with the peel, in the refrigerator. A day later, I see very small black bumps along the cut surface. What are they? What ...
9
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1answer
249 views

Identify this unusually-shaped, orange-colored fruit that grows in pairs?

The photos below were taken on the island of Penghu in the Taiwan straight in October. This was in a public place and the small tree (about 3 meters tall, trunk perhaps 8 to 10 cm diameter) had ...
9
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1answer
6k views

How does coconut water solidify into hardened coconut meat?

At first, the coconut is filled with liquid endosperm. Later when it ripens, the outer layers form brown fibrous covering, and the inner solid layer turns brown and hardens. Within that, a white layer ...
8
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1answer
2k views

How did these apples grow together?

I came through this pic while scrolling through facebook, and it was a bit strange to me. As far as I know apples have a corymbose type of inflorescence, in which a single pedicel ends in a single ...
8
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1answer
2k views

What exactly makes bananas go brown?

I know that often oxidation processes are mentioned when referring to the color change from yellow to brown in bananas (specifically: those that you get everywhere in supermarkets, with no seeds). ...
8
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1answer
218 views

What fruit did I just accidentally buy?

I live in Oxford, in the United Kingdom, in a part of the city with a vibrant multicultural community. My local corner shop has an excellent selection of spices, pulses, and obscure and vegetables ...
8
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1answer
252 views

What is this fruit found in a market in Uyuni, Bolivia at the end of December 2019? (orange skin, 4cm, white flesh)

What is this fruit found in a market in Uyuni, Bolivia at the end of December 2019? Fruit diameter: ~4 cm. Seed: large, spherical, black. Flesh: white. Taste: sweet but not as sweet as a lychee.
8
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1answer
141 views

What is this apple's abnormality?

The apple pictured is a of the Gala variety,typically striped.The stripes swirl around a brown protrusion. The protrusion is flexible,in the way a leaf is flexible. The flesh underneath is not ...
8
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1answer
5k views

Why do apples taste sweeter at the bottom?

Sometimes when eating an apple, I notice that the bottom (blossom) end of the apple has a lot more sweetness and flavour to it, whereas the top half (stem) is often more watery, crispier and feels ...
8
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2answers
196 views

What is this fruit?

There is a hairy hard shell (looking like a small kiwi), which naturally breaks, and under it there is brain-shaped red sweet flesh, half-covering the smooth black seed. Picture taken in the ...
7
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1answer
5k views

Are pulp cells (in oranges) normal plant cells?

Does a pulp cell contain all the elements that a 'normal' plant cell contains? I've searched for an hour to find more information about this but couldn't find anything useful. Is the pulp cell the ...
7
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2answers
1k views

What is the difference between vegetable and fruit?

Is there any exact definition of vegetable and fruit? How can new plant be classified?
6
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2answers
2k views

Are bananas C3, C4, or CAM plants?

Are bananas C3, C4, or CAM plants? I have been researching for some time and cannot find the answer.
6
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2answers
310 views

Can you explain the behavior of this snake?

I just saw this video in which a snake is swallowing grapes. ("Whip snake eating grapes"). In the video, the snake just doesn't eat but goes on to swallow 2-3 grapes. I did some research on the ...
5
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2answers
219 views

Why does this plum/apricot hybrid look like brains?

Why does this plum/apricot hybrid look like brains? Notes: Here's a photo of what a normal fruit on the tree looks like. Location is Zone 5, east of Toronto. There are about 20 other fruits on the ...
5
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1answer
880 views

Plant growing inside a fruit

Today after cutting open a papaya , a plant was found in it: How is it possible for a plant to grow in a fruit? How does it gets $CO_2$ and light for photosynthesis?
5
votes
1answer
330 views

What is this (seed/berry)-like object and where is it coming from?

I've been finding these little green (seed/berry) like objects in my garden for three years now. This picture shows either a large variant or simply a later lifecycle stage of development. At ...
5
votes
1answer
15k views

What is the purpose of segments in citrus fruit?

What is the purpose of segments in citrus fruit? In my experience, each segment usually contains from zero to two seeds. I may have seen more but only rarely, if I remember correctly. What is the ...
5
votes
1answer
168 views

Why there are no plants that offer salt fruits as opposed to sweet fruits?

Why there are no plants that produce salt fruits? Is it because other animals do not like salt to the same degree of humans?
5
votes
2answers
926 views

Trick fruit trees into flowering later in the spring

There is a common problem with fruit trees in temperate climates where the trees flower before the last frost. Generally speaking, if the tree has flowered, and the temperature drops below freezing, ...
4
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1answer
87 views

Can someone help me to identify what kind of pear is this?

I went to my local groceries supermarket (in Lima, Peru) and found this cheerful looking pear named locally as "pera canela". But I found it weird as the only variety which I'm aware of is Packham's ...
4
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1answer
18k views

What fruits will naturally ferment?

If left unpicked after the fruit ripens, what fruits may ferment instead of just rotting? My perception is that most fruits just rot. I know figs will ferment. I'm guessing that this is because the ...
4
votes
1answer
1k views

Banana peel bruises after a hit

When a banana fall on the floor or get a certain impact, the impact location gets darker (it bruises) after a certain amount of time. The darkening affects the peel as well as the fruit itself. Why ...
4
votes
1answer
406 views

Fruit identification - What is this green long fruit?

I found this fruit in the South of France, but I have no Idea what it is. It's a green, hard fruit. I tried to cut it to see the inside (on the following pictures). It fell from a big tree, but I don'...
4
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1answer
343 views

Vitamins located closely under the peel?

I came across an old saying (I would even call it a myth) that vitamins are concentrated under (or close under) the peel of apples or potatoes and other fruit. This implies that they are more ...
4
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1answer
10k views

Cause of Crease in Drupe Fruit

What causes the crease through the pericarp of a drupe fruit (peach, nectarine, olive)? It may just be in exocarp as @Ilan pointed out, but I assumed (perhaps wrongly), that the division continued ...
4
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0answers
2k views

Why are watermelons sweeter in the center?

Today I had a slice of watermelon and when I reached the outer parts of the pulp I wondered why those are less sweet. Whether or not the sugar occurs in crystalline form in watermelons is still an ...
4
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0answers
231 views

What are the mechanisms that cause bananas to ripen? How is or isn't it related to the banana peel ripening? [closed]

So recently our commercial kitchen got some bunches of bananas with a curious feature. On the inside they were firm and delicious (no jokes, please), on the outside they looked incredibly sickly. ...
3
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1answer
89 views

What's the name of this green fruit with little pikes fallen from a city tree on the pavement?

What's the name of this green fruit with little pikes fallen from a tree on Paris (France) pavement ?
3
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1answer
164 views

What is this long cylindrical white fruit called?

Location: West Bengal, India Temperature: 27 °C Weather: Survive all seasons, although it was raining today Length: 35 cm (although it can be small or big typically 10 to 40 cm length), girth:10 cm ...
3
votes
2answers
485 views

Convergent evolution of fruits

Many fruits are not homologous, originating from different parts of a plant. Yet they all have similar properties: Ripe fruits all have yellow to dark red color They all have a lot of water and ...
3
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1answer
78 views

What is this tree and fruits?

Please help me identify this tree and its fruits that have sweet taste and very small soft seeds: It grows in the Mediterranean region.
3
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1answer
7k views

A way to measure ripeness of a fruit

I'm doing an experiment how fast fruits ripen and decay I'm wondering how to measure the ripeness of a fruit(banana, mango, tomato, kiwi etc.) so that I will get a quantitative results. I have ...
3
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1answer
1k views

Which part of oranges contain fiber?

I think it's pith, but here (non-english country) many chef suggest orange's vascular veins which look "fibrous" and have similar translated word with "fiber" itself. Please enlighten me which?
3
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1answer
1k views

Why do fruits have to ripen?

It seems like most fruits that we consume undergo some sort of ripening process either before or after they are picked from the vine, tree, etc. I understand that sugars are released during the ...
3
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0answers
50 views

Please help ID this plant

Can anyone please identify this plant and confirm if the species is Synsepalum dulcificum (Miracle fruit)? Pics were taken near my house in Bangalore. Because the miracle fruit plant is not native to ...
2
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2answers
62 views

What was the evolutionary advantage of having seeds so large that they could only be dispersed by megafauna?

I understand that fruits like the avocado and the osange orange are so large and unwieldy that their evolutionary "intent" was to be consumed whole by megafauna that are now extinct. What I ...
2
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1answer
1k views

Why do same type of fruits come in different sizes?

Why don't fruits come in exact same size even they're the same type of fruit? This sounds like an obvious question, but why are some apples bigger than others? and why are some bananas larger than ...
2
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4answers
199 views

What causes plants in the prunus genus to reach anthesis?

In a related question, I ask how to trick fruit trees into flowering later in the spring by prolonging frozen ground conditions. However, I'm starting to realize that I don't actually understand what ...
2
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1answer
180 views

Why do home-grown fruits tend to taste better than mass-produced consumer fruits? [closed]

It is often heard that home-grown fruits and veggies are a lot tastier than the produce found in the supermarket. Although this question may contain a skeptics element in it, it is so often heard ...