Subdivision Gymnospermae
Important Questions on Subdivision Gymnospermae
The chief water conducting elements of xylem in gymnosperms are:
Top-shaped multiciliate male gametes, and the mature seed which bears only one embryo with two cotyledons, are characteristic features of
Gymnosperms are also called soft wood spermatophytes because they lack:
In gymnosperms, the pollen chamber represents:
Which one of the following plants is monoecious?
Which of the following statement is correct?
Winged pollen grains are present in:
Conifers are adapted to tolerate extreme environmental conditions because of:
Which of the following is not monoecious plant?
Select the correct statement:
In Pinus, endosperm cells have 30 chromosomes then how many chromosomes are present in sieve cells?
Which one of the following pairs is wrongly matched?
Read the following five statements and answer as asked next to them:-
(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
(E) The spores of slime molds lack cell walls
How many of the above statements are correct?
Read the following statements & select the correct option.
(A) Gymnosperms do not show xerophytic characters.
(B) In Cycas, coralloid roots are associated with mycorrhiza.
(C) In conifers, needle like leaves reduce the surface area.
(D) All gymnosperms are heterosporous.
Cycas and Adiantum resemble each other in having:
Which group of plants is exclusively arborescent (woody)?
Multiciliate male gametes are found in :-
Vessels occur in the following gymnosperm plant-
The “endosperm” of a gymnosperm represent : -
Most gymnosperms have :-
