Multiple Choice QuestionsDuring replication of DNA, Okazaki fragments are formed in the direction of
3' ➔ 5'
5' ➔ 3'
5'➔5'
3' ➔ 3'
If you want to develop hybrid seeds within a bisexual flower, the following part needs to be removed from the same flower
stigma
ovary
anther
oviduct
Megasporangium is equivalent to
embryo sac
fruit
nucellus
ovule
D.
ovule
An ovule or megasporangium generally has a single embryo sac formed from a megaspore through reduction division. It is a small structure attached to the placenta by means of a stalk called funicle.
Ovule Megaspore Mother Cell (MMC) by meiosis Megaspore
Each has one or two protective envelopes called integuments. Nucellus is a mass of cells enclosed with the integuments. Fruits develop from the ovary of flower, other floral parts degenerate and fall off.
Which one of the following statement is correct?
Hard outer layer of pollen is called intine
Sporogenous tissue is haploid
Endothecium produces the microspores
Tapetum nourishes the developing pollen
Advantage of cleistogamy is
higher genetic variability
more vigorous offspring
no dependence on pollinators
vivipary
Monoecious plant of Chara shows occurrence of
antheridiophore and archegoniophore on the same plant
stamen and carpel on the same plant
upper antheridium and lower oogonium on the same plant
upper oogonium and lower antheridium on the same plant
Perisperm differs from endosperm in
being a haploid tissue
having no reserve food
being a diploid tissue
its formation by fusion of secondary nucleus with several sperms
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