Prepare for NEET Biology Plant Kingdom with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert solutions to understand plant diversity and groups.
A unique characteristic observed in some angiosperm families like Asteraceae and Poaceae is the presence of a specialized inflorescence where the individual flowers are highly reduced and closely packed together, mimicking a single flower. This specialized inflorescence is known as:
Cyathium
Hypanthodium
Pseudanthium
Verticillaster
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
In Funaria, the dehiscence of the antheridium is facilitated by the hygroscopic action of which specialized cells?
Opercular cells
Elater cells
Peristome teeth
Paraphyses
Which specific characteristic of Sphagnum enables it to hold a significant amount of water, far exceeding its own weight?
Closely packed leaves
Presence of rhizoids
Presence of large, empty hyaline cells
Thickened cell walls
The peristome teeth in Funaria are derived from which part of the sporophyte?
Endothecium
Outermost layer of the amphithecium
Innermost layer of the amphithecium
Columella
