Geitonogamy involves

(1) Pollination of a flower by the pollen from another flower of the same plant

(2) Pollination of a flower by the pollen from the same flower

(3) Pollination of a flower by the pollen from a flower of another plant in the same population

(4) Pollination of a flower by the pollen from a flower of another plant belonging to a distant population

Pollen tablets are available in the market for

(1) In vitro fertilisation

(2) breeding programmes

(3) supplementing food

(4) Ex situ conservation

Non-albuminous seed is produced in

(1) maize

(2) castor

(3) wheat

(4) pea

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

1. cuticle

2. sporopollenin

3. lignin

4. cellulose

Wind pollination is common in

(1) lilies

(2) grasses

(3) orchids

(4) legumes

Nucellar polyembryony is reported in species of

(1) Gossypium

(2) Triticum

(3) Brassica

(4) Citrus

In which one of the following pollination is autogamous?

(1) Xenogamy

(2) Chasmogamy

(3) Cleistogamy

(4) Geitonogamy

Apomictic embryos in Citrus arise from

(1) synergids

(2) maternal sporophytic tissue in ovule

(3) antipodal cells

(4) diploid egg

Wind pollinated flowers are

Endosperm is consumed by developing embryo in the seed of

(1) coconut

(2) castor

(3) pea

(4) maize