Plant Kingdom Questions

A prokaryotic autotrophic nitrogen fixing symbiont is found in:

The gametophyte is not an independent, free-living generation in:

Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tend to be:

Archegoniophore is present in:

Flagellated male gametes are present in all the three of which one of the following sets?

In gymnosperms, the pollen chamber represents:

In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:

Spore dissemination in some liverworts is aided by:

If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

Which one of the following shows isogamy with non-flagellated gametes?

Gymnosperms are also called soft wood spermatophytes because they lack:

Cycas and Adiantum resemble each other in having:

Select the wrong statement regarding gametes and reproduction in algae:

Isogamous condition with non-flagellated gametes is found in:

Besides paddy fields, cyanobacteria are also found inside the vegetative part of:

Read the following statements:(A) In liverworts, mosses and ferns, gametophytes are free-living.(B) Gymnosperms and some ferns are heterosporous.(C) Sexual reproduction in Fucus, Volvox and Albugo is oogamous.(D) The sporophyte in liverworts is more elaborate than that in mosses.(E) Both Pinus and Marchantia are dioecious.How many of the above statements are correct?

Monoecious plant of Chara shows occurrence of:

Conifers are adapted to tolerate extreme environmental conditions because of:

Which one of the following is wrong about Chara?

Which of the following is responsible for peat formation?

An alga which can be employed as food for human being is:

Which one is a wrong statement?

In bryophytes and pteridophytes, transport of male gametes requires:

Moss peat is used as a packing material for sending flowers and live plants to distant places because:

Which one of the following is a correct statement?

Which one of the following pairs is wrongly matched?

Read the following statements (A – D):(A) In Equisetum the female gametophyte is retained on the parent sporophyte.(B) In Ginkgo male gametophyte is not independent.(C) The sporophyte in Riccia is more developed than that in Polytrichum.(D) Sexual reproduction in Volvox is isogamous.How many of the above statements are right?

Consider the following four statements. Which two statements are wrong?$(A)$ The sporophyte in liverworts is more elaborate than that in mosses.$(B)$ $\text{Salvinia}$ is heterosporous.$(C)$ The life-cycle in all seed bearing plants is diplontic.$(D)$ In $\text{Pinus}$ male and female cones are borne on different trees.

Identify the parts $(a,b,c,d)$ correctly in the figure of $\text{Marchantia}$:

$\text{Selaginella}$ and $\text{Salvinia}$ are considered to represent a significant step toward evolution of seed habit because:

Male and female gametophytes are independent and free-living in:

Which one of the following is a vascular cryptogam?

Which one of the following is considered important in the development of seed habit?

Which one of the following plants is monoecious?

In which one of the following do male and female gametophytes not have a free-living independent existence?

Which one of the following is heterosporous?

Select the feature that distinguishes Gnetum from Cycas and Pinus and shows its affinities with angiosperms:

In a moss the sporophyte:

Conifers differ from grasses in the: