Identify the different parts of a typical dicot embryo labeled as A, B and C and select the correct option.
A | B | C | |
(1) |
Plumule |
Cotyledons |
Radicle |
(2) |
Radicle |
Cotyledons |
Plumule |
(3) |
Cotyledons |
Plumule |
Radicle |
(4) |
Cotyledons |
Radicle |
Plumule |
Pollen grains are shed at which stage?
(1) 2 celled
(2) 3 celled
(3) Usually at 2-celled, but sometimes 3-celled
(4) Single celled stage
Which of these is a diploid structure ?
(1) Pollen grains
(2) Egg
(3) Megaspore
(4) MMC
False fruit in an apple is formed from
(1) receptacle
(2) thalamus
(3) peduncle
(4) petals.
Cross pollination in true genetic sense is
(1) allogamy
(2) cleistogamy
(3) geitonogamy
(4) autogamy
Seed of castor is
(1) non-endospermic, exalbuminous
(2) endospermic albuminous
(3) endospermic exalbuminous
(4) non-endospermic albuminous.
Ubisch bodies are secreted from
(1) ovule
(2) tapetum
(3) both of these
(4) none of these
Edible part of apple is the
(1) thalamus
(2) mesocarp
(3) epicarp
(4) endocarp
Pollination by bat is called
(1) ornithophily
(2) chitopteriphily
(3) malacophily
(4) anemophily