STD 11 - 15. Body fluids and criculations — NEET STD 11 Science — Question

Assertion : Nitrogen-fixing enzyme in legume root nodules function at low oxygen concentration.

Reason : Low oxygen concentration is provided by leghaemoglobin.

Which of the following cannot be detected in developing foetus by amniocentesis?

Correct sequence of the air passage in humans is

Animals of which set belongs to same phylum

Which of the following undergoes, the meiosis-I division?

Diacetyl morphine is commonly known as

During the course of development, cells in various regions of embryo become variable in morphology and eventually perform diverse functions. This process is known as

Movement of sperm is done by

Loss of a single chromosome produces a condition called.

Given below are four statements pertaining to separation of DNA fragments using Gel electrophoresis. Identify the incorrect statements.
(a) DNA is negatively charged molecule and so it is loaded on gel towards the Anode terminal.
(b) DNA fragments travel along the surface of the gel whose concentration does not affect movement of DNA.
(c) Smaller the size of DNA fragment, larger is the distance it travels through it.
(d) Pure DNA can be visualized directly by exposing to UV radiation.
Choose correct answer from the options given below: