Give reasons for the following.
Insect pollinated flowers are brightly coloured and sweet smelling.
Spores are covered by a hard covering.
Wind pollinated flowers produce large number of pollen grains.
Hooks and spines are present in seeds or fruits dispersed by animals.
Seed dispersal helps the plant.
Answers
ask a question at a time
a)In order to attract insects, insect-pollinated flowers are often brightly coloured, have scent and nectar so that the insect comes into the flower and collects or leaves pollen.
b)The spores are protected by hardprotective coat because the environment the spores might land, is not that very friendly. And the function of that coveringis to protect the spore. The spores are protected by hard protective coat because the environment the sporesmight land, is not that very friendly.
c)Wind-pollinated plants do not invest in resources that attract pollinatingorganisms, such as showy flowers, nectar, and scent. Instead, they produce larger quantities of light, dry pollen from small, plain flowers that can be carried on the wind.
d)Hooks and spines are present in seeds or plants like zanthium which helps them to stick to the skin of animals or even us
e)Animal dispersal. Animals disperse seeds in several ways. First, some plants, like the burr at left, have barbs or other structures that get tangled in animal fur or feathers, and are then carried to new sites. Other plants produce their seedsinside fleshy fruits that then get eaten be an animal.
HOPE IT IS HELPFUL: )