Functional megaspore in an angiosperm develops into

1. ovule

2. endosperm

3. embryo sac

4. embryo

The morphological nature of the edible part of coconut is

1. perisperm

2. cotyledon

3. endosperm

4. pericarp

Pollination in water hyacinth and water lily is brought about by the agency of

1. water

2 . insects or wind

3. birds

4. bats

The coconut water from tender coconut represents

1. fleshy mesocarp

2. free-nuclear proembryo

3. free-nuclear endosperm

4. endocarp

Seed formation without fertilisation in flowering plants involves the process of

1. budding

2. somatic hybridization

3. apomixis

4. sporulation

Dioecy in plants prevents:

1. Autogamy but not geitonogamy

2. Geitonogamy but not autogamy

3. Both autogamy and geitonogamy

4. Neither autogamy nor geitonogamy

Functional megaspore in an angiosperm develops into:

Which of the following has proved helpful in preserving pollens as fossils?

Winged pollen grains are present in:

1 Mustard
2. Cycas
3. Mango
4. Pinus

Pollen grains can be stored for several years in liquid nitrogen having a temperature of: