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
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
C.
no dependence on pollinators
In cleistogamous flowers, anthers and stigma lie close to each other. When anthers dehisce in the flower buds, pollen grains come in contact with the stigma to effect pollination. Thus, these flowers produce assured seed set even in the absence of pollinators.
The higher genetic variability and more vigorous offsprings are produced to variations obtained by sexual reproduction. Vivipary relates to the birth of young babies from mammals.
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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