Tag: types of endosperms

Questions Related to types of endosperms

When a heterozygous maize plant with coloured and full endosperm seed is crossed to a plant with colourless and shrunken seeds , in the progeny 480 colored full endosperm seed containing 20 colored shrunken seed containing and 20 colorless and full endosperm seed containing plants are produced What is the percentage of rfecombination?

types of endosperms plant kingdom biology

  1. 96

  2. 4

  3. 50

  4. 2

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Correct Option: A
Explanation:

When a heterozygous maize plant with coloured and full endosperm seed is crossed to a plant with colourless and shrunken seeds. In the progeny 480 coloured full endosperm seed containing 20 coloured shrunken seed containing and 20 colourless and full endosperm seed containing plants are produced. The percentage of recombinants are 38%. 

no option

Choose the correct answers from the alternatives given.
Scutdllum is

types of endosperms plant kingdom biology

  1. a protective covering of the radicle

  2. a protective covering of the plumule

  3. an endosperm

  4. a shield-shaped cotyledon

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Correct Option: D

Choose the correct answers from the alternatives given.
The perisperm is the remaining

types of endosperms plant kingdom biology

  1. nucellus

  2. endosperm

  3. female gametophyte

  4. integument

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Correct Option: A
Explanation:
Perisperm nutritive tissue of seed derived from the nucellus and deposited externally to the embryo sac distinguished from the endosperm. A layer of nutritive tissue in the seed of certain flowering plants that are derived from the nucellus and surrounds the embryo. In seeds of some plants remnants of nucellus is persistent. This residual, persistent nucellus is called perisperm.
So, the correct option is, 'nucellus'.