According to Darwin, the organic evolution is due to

Raja is injured and got swelling. The swelling is due to the infection of tissue is an example of

The active principle trans-tetra hydro canabiol is present in ______.

Jaya and Ratna are the semi dwarf varieties of ______.

One green house gas contributes 14% of total global warming and another contributes 6%. These are respectively identified as _____.

Which one is in descending order of a food chain?

Which of the following is correct for r-selected species

A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla ______.

Read the given statements and select the correct option.
i) Hydrophytes possess aerenchyma to support themselves in water.
ii) Seeds of Viscum are positively photoblastic as they germinate only in presence of light.
iii) Hygroscopic water is the only soil water available to roots of plant growing in soil as it is present inside the micropores.
iv) High temperature reduces use of water and solute absorption by roots

The Ozone Day is observed every year on September 16 as on this day in 1987 the ___________was signed for launching efforts to arrest the depletion of the fragile ozone layer in the stratosphere that prevents the harmful ultra-violet rays of the sun from reaching the earth. Fill the correct word in blank.

Transgenic animals are those which have

CO₂ is not released during

Which of the following forests is known as the lungs of the planet earth?

The time duration for sterilization process by using autoclave is ______ minutes and the temperature is ______.

The wings of birds and butterflies is an example of

The approach which does not give the defined action of contraceptive is

Which one of the following is not correct statement

E. coli cell grown on ¹⁵N medium are transferred to ¹⁴N medium and allowed to grow for two generations. DNA extracted from these cells is ultracentrifuged in a cesium chloride density gradient. What density distribution of DNA would you expect in this experiment?

Who is the founder of Modern Eugenics movement?

Allergy involves

The point mutation sequence for transition, transition, transversion and transversion in DNA are ______.

Which of the following is true about Rh factor in the offspring of a parental combination DdxDd (both Rh positive)?

Select the period for Mendel’s hybridization experiments.

The genotype of a plant showing the dominant phenotype can be determined by _____.

Coleorhiza is found in ______.

Which of the following represent megagametophyte?

Assertion(A): Ovulation is the release of ovum from the Graafian follicle.
Reason(R): It occurs during the follicular phase of the menstrual cycle.
Codes:
(a) A and R are true, R is the correct explanation of A
(b) A and R are true, R is not the correct explanation of A
(c)  A is true, R is false
(d) Both A and R are false

In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion (A): Offsprings produced by asexual reproduction are genetically identical to the parent.
Reason(R): Asexual reproduction involves only mitosis and no meiosis.
Codes:
A. If both A and R are true and R is correct explanation for A
B. If both A and R are true but R is not the correct explanation for A
C. If A is true but R is false
D. If both A and R are false.