Sexual Reproduction in Flowering Plants

Summative Practice Chapter 6 (Form 5 Biology Textbook Exercise and Answer)

Question 1:The stigma secretes a sugary solution called nectar. What is the importance of the solution? Answer:Stimulate the germination of the pollen grains to form pollen tube.Makes the stigma sticky and allows the pollen grain to stick to it. Question 2:The formation of pollen grains involves the division of cells by meiosis and mitosis. State … Read more

Formative Practice 6.5 (Form 5 Biology Textbook Exercise and Answer)

Question 1:Why are seeds important to ensure that plant species are not extinct? Answer:Seeds contain embryos that will germinate to form new plants. Question 2:Explain the following statements.(a) There are cotyledons inside a seed(b) Some plants have a very large number of seeds Answer:(a) Cotyledons supply food to seedlings before the presence of leaves for … Read more

Formative Practice 6.4 (Form 5 Biology Textbook Exercise and Answer)

Question 1:After fertilisation occurs between the male gamete and the egg cell, the zygote produced undergoes mitosis forming two cells. Explain. Answer:One cell will develop to form the suspensor and another cell will develop to form the embryo. Question 2:State the structure of the seed which enables it to be stored for a long time … Read more

Formative Practice 6.3 (Form 5 Biology Textbook Exercise and Answer)

Question 1:What is meant by pollination? Answer:The transfer of pollen grains from the anther to the stigma Question 2:Pollination is very important to ensure that reproduction in flowering plants occurs successfully. Explain. Answer:Pollination transfers pollen grains from anther to stigma. The presence of pollen grains on the stigma initiates the fertilisation. Question 3:During the formation … Read more

Formative Practice 6.2 (Form 5 Biology Textbook Exercise and Answer)

Question 1:Name the cell that differentiates to form:(a) Pollen grains in the anther(b) Embryo sac in the ovary Answer:(a) Microsphore mother cell(b) Megaspore mother cell Question 2:In the formation of pollen grains, the nucleus in the pollen will divide by mitosis to form two nuclei. Justify. Answer:Produces two nuclei, namely the generative nucleus and the … Read more