MEDIUM
7th CBSE
IMPORTANT
Earn 100

The diagrams show a stamen and section cut through the anther. 
a) Name structures A to C. 
b) Draw a line on the diagram of the stamen to show wherefrom it was cut to obtain the section. 
c) Structure D is involved in translocation. Why is this process important in the growth of structure C? 

Question Image                   Question Image

Important Questions on Reproduction in Plants

HARD
7th CBSE
IMPORTANT
The diagram below shows the carpel of a flower after pollination. 
a) Name the structures A to C. 
b) What has caused structure B to grow out of structure A? 
c) Briefly explain how the structure B carries out its function. 
d) What happens after structure B reaches its destination? 
Question Image
MEDIUM
7th CBSE
IMPORTANT
Some flowers are pollinated through insects. For what reasons do insects visit flowers? How do the insects help in pollination? 
MEDIUM
7th CBSE
IMPORTANT
Explain wind pollination and give explanation of why wind-pollinated flowers produce a large amount of pollen grains.
HARD
7th CBSE
IMPORTANT
Nowadays artificial methods have been developed for vegetative reproduction. Explain the types of artificial reproduction.
MEDIUM
7th CBSE
IMPORTANT
Why are male and female parts necessary for sexual reproduction? Explain their presence with the help of drawing their location on a flower. 
HARD
7th CBSE
IMPORTANT
Despite having sexual reproductive parts why has nature chosen asexual reproduction in plants? While justifying your answer, give few examples also.
HARD
7th CBSE
IMPORTANT

Grafting is a technique used to increase the numbers of a particular variety of plant. A stem cutting, from a commercially grown fruit tree, P was grafted onto the roots of a non-commercial tree Q.

a) What is the type of reproduction shown in this process? 
b) If the new tree bears fruits, which variety will the fruits would be produced - commercial or non-commercial? Why?
c) List three ways to ensure that grafting in the above case is successful? 
d) Which other technique, similar to grafting, can be used to increase fruit production? 

HARD
7th CBSE
IMPORTANT
A small piece of root tissue is taken from an oil palm tree and placed in a nutrient medium. Each small piece produces a new oil palm tree. What type of reproduction is this and how will the genotype of the new tree be in comparison to the parent tree?