Biology - General Knowledge Questions and Answers

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The layer of cells between endodermis and vascular bundles is called

Hypodermis

Cortex

Pith

Pericycle

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Gymnosperms are characterized by the

Absence of seeds

Presence of flowers

Presence of seeds in cones

Absence of vascular tissues

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In a bisexual flower if androecium and gynoecium mature at different time the phenomenon is known as ________

Dichogamy

Herpogamy

Haterogamy

None of these

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The pollen grains of Pinus are carried to its female cone through the

Pollen tube

Wind

Insects

Animals

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A seed is ripened ________

Ovary

Flower

Gynoecium

Ovule

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Which among the following is not a true fruit?

Apple

Date

Grape

Plum

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Which of these is unique to flowering plants?

Double fertilization

An embryo surrounded by nutritive tissue

Haploid gametophytes

Pollen production

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The pollination by snails is called

Zoophily

Entomophily

Chiropteriphily

Malacophily

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Which one of the following completes the given statement correctly?
A seed is a ripened _______

Ovary

Flower

Gynoecium

Ovule