Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Sexual Reproduction in flowering Plants

Multiple Choice Questions

161.

Exine of pollen grain is made up o

pectocellulose
lignocellulose
sporopollenin
pollen kit

162.

Seedless banana is

parthenocarpic fruit
multiple fruit
drupe fruit
true fruit

163.

Ovule integument gets transformed into

seed
fruit wall
seed coat
cotyledons

164.

Sporopollenin is chemically

homopolysaccharide
fatty substance
protein
heteropolysaccharide

165.

During replication of DNA, Okazaki fragments are formed in the direction of

3' ➔ 5'
5' ➔ 3'
5'➔5'
3' ➔ 3'

166.

If you want to develop hybrid seeds within a bisexual flower, the following part needs to be removed from the same flower

stigma
ovary
anther
oviduct

167.

Xenogamy is essentially a type of

cleistogamy
allogamy
autogamy
homogamy

168.

Megasporangium is equivalent to

embryo sac
fruit
nucellus
ovule

169.
Seed coat is not thin, membranous in

maize

coconut

groundnut

gram

coconut

The seed coat develops from the maternal tissue, the integuments, originally surrounding the ovule. The seed coat in the mature seed can be a paper-thin layer (e.g. peanut) or something more substantial (e.g. thick and hard in honey locust and coconut), or fleshy as in the sarcotesta of pomegranate. Therefore, it is thick in coconut seed and thin, membranous in groundnut, gram and maize seeds.