Zoology - Online Test
Q1. Which serve as quick referral systems in taxonomical studies?
Answer : Option A
Explaination / Solution:
Museums have collections of preserved plant and animal specimens for study and reference. Manuals are useful in providing information for identification of names of species found in an area. Monographs contain information on any one taxon. Hence, the correct option is Herbarium.
Q2. A vasectomy prevents the
Answer : Option D
Explaination / Solution:
Vasectomy is the surgical method of birth control in which vas deference of male is cut and tide to prevent release of sperm into vagina during coitus.
Q3. The primary control of gene expression takes place at the level of
Answer : Option D
Explaination / Solution:
Expression of gene starts with transcription of particular segment of DNA, so primary control of gene expression takes place at the level of transcription of DNA into m-RNA.
Q4. The number of autosomes in human primary spermatocyte is
Answer : Option A
Explaination / Solution:
Primary spermatocytes are diploid and contain 23 pairs (46) of chromosomes. These chromosomes are divided into autosomes and sex chromosome. Sex chromosomes are XY and remaining chromosomes are called autosomes.
Q5. Chipko movement originated in
Answer : Option D
Explaination / Solution:
Chipko movement originated in Terhi Garwal of Utter Pradesh to protect the forest form contractors. In this movement women of village hug the tree to prevent it from cutting.
Q6. Material used for study of mitotic cell division in class room is
Answer : Option A
Explaination / Solution:
The most common material used for study of mitosis cell division in class room is onion root and broad bean root tip. They can be grown quickly and in all seasons. Also they are esier to handle with and divisional stages are completed quickly.
Q7. A grown up cell divides when a maximum size is attained and which disturb the
Answer : Option B
Explaination / Solution:
A disturbance in the nucleoplasmic ratio will cause the cell to divide and attain stable ration which is 1. If it is less or more than 1 the cell becomes unstable and divides agin.
Q8. Single step large mutation is called
Answer : Option A
Explaination / Solution:
Evolution for Darwin was gradual while deVries believed mutation caused speciation. The single large mutation is called saltation.
Q9. Specimens are preserved in the containers or jars in preservative solutions in
Answer : Option A
Explaination / Solution:
Specimens are preserved in the containers or jars in preservative solutions in museum.
Q10. A mother of one year old daughter wanted to space between her children. The best contraceptive method she should use is
Answer : Option B
Explaination / Solution:
Copper-T is a contraceptive method under intra uterine contraceptive device which prevents the implantation and reduce the motility of sperm. It is implanted inside the uterus and works up to five years. So, it is the best method for spacing between two children.
