Zoology - Online Test
Q1. Which article of the Constitution of India specifies that, "it shall be the duty of every citizen of India to protect and improve the natural environment including forests, lakes, rivers, and wildlife and to have compassion for living creatures."
Answer : Option B
Explaination / Solution:
All the fundamental duties are contained in Art. 51A.
to protect and improve the natural environment including forests, lakes, rivers, and wildlife and to have compassion for living creatures is a fundamental duty listed in constitution of India.
Q2. The largest phylum of kingdom animalia is
Answer : Option A
Explaination / Solution:
Arthropoda is the largest phylum of kingdom animalia. It includes all insects, arachnids, myriapods and crustaceans. They are characterized by jointed limbs and cuticles.
Q3. The primary sex organ of human male is
Answer : Option A
Explaination / Solution:
Testis is the primary sex organ in human male as it produce sperm or male gametes without which reproduction is not possible.
Q4. Enzymes functional inside the living cells are called
Answer : Option A
Explaination / Solution:
Enzymes functional inside the living cells are called endoenzyme or intracellular enzyme. It function only inside the cell in which it was produced.
Q5. The middle man of our body is :
Answer : Option B
Explaination / Solution:
Lymph is the extracellular fluid that contains WBC’s and plasma. Lymph flows in lymphatic system and finally drains into veins. Lymph is called as the middle man of our body.
Q6. The most common fungal partners of mycorrhiza are ______ species.
Answer : Option C
Explaination / Solution:
Mycorrhiza is symbiotic association between fungus and angiosperms. The most common fungal partners of mycorrhiza are Glomus species.
Q7. The noise level that can cause permanent impairment of hearing ability of human beings :
Answer : Option D
Explaination / Solution:
Noise pollution is a kind of air pollution that may cause permanent impairmentof hearing ability of human beings.
After 150 dB (firecracker) sounds can be felt in the form of shock waves. The pressure difference they cause in the medium can actually be felt by your body. 150 decibels is usually considered enough to burst your eardrums,
Q8. M phase represents
Answer : Option B
Explaination / Solution:
The M Phase represents the phase when the actual cell division or mitosis occurs/starts during cell cycle.
Q9. EtBr fluoresces at the wavelength
Answer : Option B
Explaination / Solution:
Ethidium bromide is an intercalating agent commonly used as a fluorescent tag (nucleic acid stain) in molecular biology laboratories for techniques such as agarose gel electrophoresis. It is commonly abbreviated as "EtBr", which is also an abbreviation for bromoethane. When exposed to ultraviolet light, it will fluoresce with an orange colour, intensifying almost 20-fold after binding to DNA. It fluoresces at the wavelength at 254 nm.
Q10. Ascending limb of Henle’s loop is not permeable for :
Answer : Option A
Explaination / Solution:
Ascending limb of Henle’s is not permeable to water. The descending limb is although permeable to water. Counter current exchange takes place between the loop of Henle’s and arteries surrounding it.
