The loss of soil through erosion can be reduced by
watering
crop rotation
manuring
irrigation
Correct answer is B
Advantages of Crop Rotation
During blood transfusion, agglutination may occur as a result of the reaction between
contrasting antigens and antibodies
two different antigens
two different antibodies
similar antigens and antibodies
Correct answer is D
For example, take the blood group A, it has antigen A and antibody B. When the anti-A antibody is used on this blood group, it causes a clumping. The anti-A antibody contains Antigen A. Hence, the clumping which is called AGGLUTINATION.
How many alleles control blood grouping in humans?
3
4
5
2
Correct answer is A
No explanation has been provided for this answer.
Crossing individuals of the same species with different genetic characters is known as
cross breeding
polygenic inheritance
non-disjunction
inbreeding
Correct answer is A
No explanation has been provided for this answer.
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
Variation
Survival of the fittest
Use and disuse
Competition
Correct answer is C
No explanation has been provided for this answer.