Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
In the life cycle of Polysiphonia, a complex Rhodophycean alga, what unique characteristic distinguishes it from most other algal groups?
Presence of a dominant sporophyte generation
Lack of motile gametes
Three multicellular phases: carposporophyte, tetrasporophyte, and gametophyte
Production of non-motile spores
Which of the following statements regarding the development of the male gametophyte in Pinus is INCORRECT?
Microspore is the first cell of the male gametophyte.
The prothallial cell eventually degenerates.
The generative cell directly develops into the sterile cell and two male gametes.
A tube cell and a generative cell are formed after the first mitotic division of the microspore.
In the development of the Funaria sporophyte, which structure is responsible for supplying nutrients to the developing sporogonium?
Seta
Capsule
Foot
Calyptra
The sporophyte of a bryophyte is dependent on the gametophyte. Which specific tissue within the sporophyte facilitates nutrient transfer from the gametophyte?
Seta
Capsule
Calyptra
Foot
Which unique characteristic of bryophyte reproduction distinguishes them from other land plants?
Presence of vascular tissue
Seed production
Dominant gametophyte generation
Pollen dispersal by wind
The sporophyte of a certain bryophyte is completely dependent on the gametophyte. Microscopic examination of its cells reveals the presence of prominent plasmodesmata. Which of the following is LEAST likely to be true about this bryophyte?
It belongs to the class Anthocerotopsida.
Its sporophyte lacks stomata.
It is homosporous.
It reproduces asexually through fragmentation of the gametophyte.
In bryophytes, the phenomenon of 'matrotrophy' refers to:
Asexual reproduction through gemmae
Symbiotic association with fungi
Nourishment of the sporophyte by the gametophyte
Water transport through capillary action
Which of the following is the dominant photosynthetic phase in the life cycle of Funaria?
Sporophyte
Gametophyte
Protonema
Both sporophyte and gametophyte equally
In heterosporous pteridophytes, the development of the male gametophyte predominantly occurs:
Within the megaspore wall
Outside the spore wall
Partially inside and outside the spore wall
Within the microspore wall
The suspensor in Selaginella plays a crucial role in:
Anchoring the gametophyte to the substrate
Protecting the developing sporophyte
Facilitating spore dispersal
Pushing the developing embryo into the nutritive tissue of the female gametophyte
