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
During formation of which of the following free nuclear division occurs?
(1) Flower
(2) Endosperm
(3) Gametes
(4) Fruit
Xenia and metaxenia terms are related with
(1) pollen culture
(2) xylem and phloem
(3) endosperm
(4) embryo
Pollen grains are able to withstand extremes of temperature and dessication because their exine is composed of
(1) cutin
(2) suberin
(3) sporopollenin
(4) callose