Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
In a particular angiosperm species, the development of the endosperm is initiated only after fertilization of the central cell. However, a mutation leads to autonomous endosperm development even without fertilization. Which of the following is the MOST likely consequence of this mutation?
Enhanced seed viability and germination rate
Formation of seeds with underdeveloped embryos or no embryos at all
Increased fruit size and seed number
Premature fruit ripening and abscission
A plant species exhibits cleistogamous flowers alongside chasmogamous flowers. What is the PRIMARY advantage conferred by the cleistogamous flowers?
Increased genetic diversity through cross-pollination
Assured seed set even in the absence of pollinators
Attraction of a wider range of pollinators
Production of larger and more nutritious seeds
The double fertilization event unique to angiosperms results in the formation of:
A diploid zygote and a triploid endosperm
Two diploid zygotes
A haploid zygote and a diploid endosperm
Two haploid zygotes
The phenomenon of double fertilization in angiosperms results in the formation of:
Two diploid zygotes
A diploid zygote and a triploid primary endosperm nucleus
A triploid zygote and a diploid primary endosperm nucleus
Two triploid primary endosperm nuclei
Which of the following statements regarding apomixis is INCORRECT?
Seeds are formed without fertilization
It leads to clonal propagation
It maintains hybrid vigor over generations
It is seen in some species of Asteraceae and grasses
In a tetrasporangiate anther, the number of microspore mother cells required to produce 100 pollen grains is:
25
50
100
200
Identify the INCORRECT statement regarding the development of the female gametophyte (embryo sac) in angiosperms:
The functional megaspore undergoes three mitotic divisions.
The mature embryo sac is typically 7-celled and 8-nucleate.
The synergids are located at the chalazal end of the embryo sac.
The antipodal cells are located at the chalazal end of the embryo sac.
Which of the following combinations of floral characteristics is MOST likely to be associated with wind pollination?
Large, showy flowers; abundant nectar; small amounts of pollen; sticky stigma
Small, inconspicuous flowers; no nectar; large amounts of pollen; feathery stigma
Brightly colored flowers; strong fragrance; moderate amounts of pollen; tubular stigma
Large, bell-shaped flowers; copious nectar; few pollen grains; exposed stigma
Which of the following is an example of a monoecious plant?
Papaya
Cucurbita
Date Palm
Marchantia
