Organisms and Populations — BIOLOGY STD 12 Science — Question

What does J-shaped growth curve of a population indicate?

List two essential roles of ribosome during translation.

In Drosophila, 2n = 8; how many linkage groups are present in it?

What are the organisms that feed on plant sap and other plant parts called?

Why is it not possible for an alien DNA to become part of a chromosome anywhere along its length and replicate normally?

In an experiment, DNA is treated with a compound which tends to place itself amongst the stacks of nitrogenous base pairs. As a result of which the distance between two consecutive base increases, from 0.34nm to 0.44nm. Calculate the length of DNA double helix (which has 2 × 109 bp) in the presence of saturating amount of this compound.

Mark the odd one in the following group.
Cellulose, Lysozymes, Chitinase, Endonuclease.

A geneticist interested in studying variations and patterns of inheritance in living beings prefers to choose organisms for experiments with shorter life cycle. Provide a reason.

What term is given to the method of ART in which a sperm is directly injected into the ovum?

What is called a sacred grove.