STD 12 - 1. sexual reproduction in flowering plants — BIOLOGY STD 12 Science — Question

Lactational amenorrhea has been reported to be effective only upto a maximum period of _________following parturition:

A nucleoside differs from a nucleotide. It lacks the:

Which is defined as an ecological state of a species being unique to a specific geographic location.

Which of the following is not a component of Fallopian tube?

Secondary productivity is rate of formation ofnew organic matter by

The immature male germ cell undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above:

Coca alkaloid or cocaine is obtained from

Dryopithecus was more similar to :

How many sentences are correct?

- To produce seeds without fertilisation is called apomixis

- Occurance of more than one embryo in a seed is referred to as polyembryony

- The pollen grains represent the male gametophytes.

Endemism refers to: