Tagged Questions
0
votes
0answers
34 views
Why aren't antheridia and archegonia touching?
Antheridia and archegonia are the two male and female gametangia, respectively, and they are found in bryophytes. To cause fertilization, usually a thin film of water must be present for the sperm ...
7
votes
1answer
221 views
Why are some berries poisonous?
In my understanding, the evolutional function of berries is to be eaten and pood out somewhere else, so that the seeds of the plant spread. Is this so? Then why are some berries poisonous?
9
votes
2answers
827 views
Did animals evolve from plants?
Did animals evolve from plants? Did the animals' ancentors have chloroplasts in their cells?
9
votes
4answers
160 views
What was the reason for some plant and animals to become giant in course of evolution?
The dinosaurs, mammoths, giant plants etc are known to be bigger than modern animals. I wonder why they had been lived and why they are not living now? I really don't know much but is it something ...
9
votes
1answer
397 views
Why do some plant species have lobed leaves, while similar species in the same habitat don't?
Some plants have lobed leaves, like the English oak (Quercus robur), while other plants growing the same deciduous woodland habitats, and very often growing alongside oaks, such as the European beech ...
30
votes
4answers
1k views
Why do plants have green leaves and not red?
I know plants are green due to chlorophyll.
Surely it would be more beneficial for plants to be red than green as by being green they reflect green light and do not absorb it even though green light ...
