A chromosomal disorder caused due to loss of one X chromosome in human female is:

Which of the following is a hormonal method of contraception?

The capacity to generate a whole plant from any cell is called:

Read the following passage carefully and answer the given questions.
Productivity in the Ecosystem
The flow of energy through a terrestrial ecosystem starts with the harnessing of sunlight by autotrophs. The radiant energy is converted by photosynthesis to organic compounds is known as productivity. The productivity is expressed in units of energy per unit of area per unit time. The amount of organic matter present at any given time is biomass. The productivity of any ecosystem is affected by many parameters like weather conditions, nutrient availability etc. The productivity of any ecosystem does vary seasonally and yearly.
The amount of organic matter accumulated in an ecosystem at a given time is known as-

The menstrual flow results due to:
A. Increased estrogen levels
B. When released ovum is not fertilized
C. When pregnancy occurs
D. Breakdown of the endometrial lining of the uterus and its blood vessels

Observe the figure and answer the following:

Match List I with List II

LIST I	LIST II
A. Disrupting selection	I. A
B. Stabilising selection	II. D
C. Favouring medium sized individuals	III. C
D. Directional selection	IV. B

Choose the correct answer from the options given below:

In eukaryotes, RNA polymerase III transcribes:
(A) tRNA
(B) 5.8S rRNA
(C) 5srRNA
(D) snRNA
Choose the correct answer from the options given below:

If Brewster's angle be θ, then the critical angle is:

\(\int_0^{\frac{\pi}{2}} \sin ^2 x d x\) is equal to:

The cell \(Zn \left| Zn ^{2+}(1 M ) \| Cu ^{2+}(1 M )\right| Cu\) has \(E_{\text {cell }}^{\circ}=1.10 V\).
The cell is allowed to be completely discharged at 298 K .
The relative concentration of \(Zn ^{2+} / Cu ^{2+}\) is:

Which of the following reagents will not convert Toluene into Benzaldehyde?

In a game of 100 points, A can give B 20 points and C 28 points. How many points can B give C?

The active chemical drug reserpine is obtained from: