HARD
12th CBSE
IMPORTANT
Earn 100
Suggest two advantages to a farmer for using apomictic seeds of hybrid varieties.
Important Questions on Sexual Reproduction in Flowering Plants
HARD
12th CBSE
IMPORTANT
A single pea plant in your kitchen garden produces pods with viable seeds, but the individual papaya plant does not. Explain.
MEDIUM
12th CBSE
IMPORTANT
Gynoecium of a flower may be apocarpous or syncarpous. Explain with the help of an example each.
HARD
12th CBSE
IMPORTANT
Out of many papaya plants growing in your garden only a few bear fruits. Give reason
HARD
12th CBSE
IMPORTANT
A mature embryo sac in a flowering plant may possess 7- cells but 8- nuclei. Explain with diagram
MEDIUM
12th CBSE
IMPORTANT
Mention the ploidy of the different types of cells present in the female gametophytes of angiosperms.
MEDIUM
12th CBSE
IMPORTANT
A pollen grain in angiosperms at the time of dehiscence from an anther could be 2 celled or 3 celled. Explain. How are the cells placed within the pollen grains when died at a 2- celled stage?
HARD
12th CBSE
IMPORTANT
“ Pollen grain in wheat are shed at 3- celled stage while in pea they are shed at 2- celled stage”. Explain. Where are germ pores present in a pollen grain?
MEDIUM
12th CBSE
IMPORTANT
How many cells are present in the pollen grain at the time of their release from anther? Name the cells.
