4. Name the following:
(a) Part of the plumule above the embryonal axis of the
seed.
(b) A chemical used in experiment to absorb oxygen.
(c) A dicotyledonous endospermic seed.
(d) A monocot exalbuminous seed.
(e) Layer of endosperm of maize, rich in protein.
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Answers
→epicotyl
.l The answer is epicotyl. Hypocotyl and epicotyl are the parts of a seed embryo or seedling.
→Pyrogallol
Pyrogallol belongs to phenol family. Its IUPAC name benzene-1,2,3-triol. It is used as a photographic film developer and in chemical synthesis.
→Seeds having endosperm is called as endospermic seed. ... Example of plant having endospermic dicot seed is Ricinus communis (Castor). Example of plant having non-endospermic dicot seed is Pisum sativum (Pea).
→The seeds which do not contain endosperm are called as exalbuminous or non endospermic seeds. The cotyledons of these seeds store food material and become fleshy. The dicotyledonous exalbuminous seeds are mango and mustard. The monocot exalbuminous seeds are vallisneria and orchid.
→Aleurone layer
Aleurone layerThe answer is aleurone. Aleurone layer is an outer cellular layer of endosperm. It performs various functions: 1) It stores various oils and proteins, which are necessary for seed development and maturation.
Answer:
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