Biology
Given below is a longitudinal section of a bean seed. Label the parts marked 1 to 5 and write their functions.
Flower
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Answer
The parts marked 1 to 5 are:
- Testa
- Plumule
- Radicle
- Micropyle
- Cotyledon
Their functions are as follows:
- Testa — It protects the seed from insect and bacteria as well as from mechanical injury.
- Plumule — It develops into the shoot.
- Radicle — It develops into the root.
- Micropyle — It absorbs and allows the entry of as much water as is required for germination.
- Cotyledons — They contain stored food material which is used by the seedlings for growth.
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Related Questions
Given below are sets of four terms. Choose the odd one and write the category of the remaining terms :
- Epicarp, Epicalyx, Endocarp, Mesocarp
- Anther, Ovary, Stigma, Style
- Bean, Gram, Rice, Pea
- Tegmen, Cotyledones, Testa, Thalamus
- Apple, Mango, Guava, Litchi
Correct the following statements by changing the first/last word only
- Ovary is the part of a flower from where the petals and other floral parts arise.
- A fruit is the ripened ovule.
- The plumule of an embryo develops into the root system.
- Hilum is a small pore which allows the entry of water inside the seed.
- Enzymes act best at a temperature between 45° to 50° C.
Name the following:
- A seed which shows hypogeal germination.
- A monocot seed.
- A dicot seed.
- A seed which shows epigeal germination.
Differentiate between Radicle and Plumule