The stain commonly used to visualise DNA fragments separated by gel electrophoresis is:

Transfer of pollen grains from anther of a flower to the stigma of a flower on different plant is called as _________

Implantation of the human embryo occurs in the:

The inner cell mass of the embryo contains some cells which can give rise to all the tissues and organs. They are known as:

Which of the following argument supports the conservation of biodiversity from the below statement:
"Waking up to a Bulbul's song in the morning"

Select the correct statements regarding the menstrual cycle in females:
(A) The first menstruation begins at puberty and is called menopause.
(B) Ovulation occurs mid-cycle (around day 14) when progesterone level is maximum.
(C) In absence of fertilization, corpus luteum degenerates and causes breakdown of endometrium, starting a new cycle.
(D) In humans, menstrual cycle stops around the age of 50 years.
Select the correct answer from the options given below:

The number of chromosomes in the gamete of a house fly is:

From the following statement regarding the order of reaction, the statement that is not true is

Match List I with List II

LIST I	LIST II
A. Cyclotron frequency	I. \(\frac{N A B}{K R}\)
B. Magnetic field due to a circular coil	II. \(\frac{q B}{2 \pi m}\)
C. Magnetic field inside a toroid	III. \(\frac{\mu_0 N I}{2 \pi R}\)
D. Voltage sensitivity	IV.\(\frac{\mu_0 I}{2 R}\)

Choose the correct answer from the options given below:

Read the following paragraph carefully and answer the given questions.
In the year 1963 the two enzymes responsible for restricting the growth of bacteriophage in E. coli were isolated. The first restriction endonuclease - Hind II, whose functioning depended on a specific DNA nucleotide sequence was characterized five years later. It was found that Hind II always cut DNA molecules at a particular point by recognizing a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II. Besides Hind II, today we know more than 900 restriction enzymes that have been isolated from over 230 strains of bacteria, each of which recognize different recognition sequences.
DNA fragments can be separated by a technique known as:

A dietician wishes to mix two types of food in such a way that the vitamin contents of the mixture contains atleast 8 units of Vitamin A and 10 units of Vitamin C. Food 'I' contains 2 units/kg of Vitamin A and 1 unit/kg of Vitamin C while food 'II' contains 1 unit/kg of Vitamin A and 2 units/kg of Vitamin C. It costs ₹5 per kg to purchase food I and ₹7 per kg to purchase food II. If 'x' kg of food I is mixed with 'y' kg of food II, then the constraint pertaining to vitamin C contents will be:

Let \(A=\left[\begin{array}{ccc}1 & -2 & 3 \\ 1 & 2 & 1 \\ \lambda & 2 & -3\end{array}\right]\). If \(A^{-1}\) does not exist, then \(\lambda=\)

In water hyacinth, pollination is carried out by -
(A). Wind
(B). Water
(C). Insects
(D). Animals
Choose the correct answer from the options given below: