NEET Botany Human Reproduction Class 12 Questions

In the given diagram, label the parts A, B, C, D, E.

Select the characteristics required in flowers for wind pollination and choose the correct option.

Match the Column-I with Column-II and choose the correct option.

Select the incorrectly matched pair regarding placentation and the examples.

Endosperm is completely consumed by developing embryo in

Read carefully and find out the correct statement from the given (a) Twin characteristics of reproduction are increase in mass and number of individual (b) A multicellular organism grows by cell division (c) Cell division occurs in all tissues to replace lost cells (d) Taxonomical groups are morphological aggregates

Vegetative reproduction in mosses takes place by fragmentation and budding in the

In which group of plants both male and female gametophytes do not have an independent free living existence?

Read the following statements (A⁻E) and answer the question which follows them (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?

Innermost anther wall layer having dense cytoplasm, generally more than one nucleus and role in nourishment is

Find the incorrectly matched pair.

Read the following five statements (A - D) 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

In which one of the following, the ovules are not enclosed by an ovary wall and remain exposed?

Which one of the following is a triploid cell?

Which one of the following types of pollination brings genetically different types of pollen grains to the stigma?