Zoology - Online Test
Q1. Which of the following variety of wheat is resistant to leaf and strip rust and hill bunt disease?
Answer : Option D
Explaination / Solution:
Himgiri wheat variety is resistant to disease like leaf and strip rust and hill bunt disease that cause great loss of productivity due to loss of plant parts.
Q2. Tropical Botanical garden and research institute is situated at
Answer : Option D
Explaination / Solution:
Tropical Botanic Garden and Research Institute (TBGRI) is an autonomous institute established by the Government of Kerala in 1979 at Thiruvanantapuram, Kerala.
The institute conducts research in Conservation Biology, Biotechnology, Plant Taxonomy, Microbiology, Phytopharmocology, Ethnomedicine and Ethopharmacology for plant improvement and utilisation.
TBGRI also undertakes research on medicinal plants, ornamental plants and various introduced plants of economic or aesthetic value. The institute conserves the largest number of plant species among the botanical gardens in Asia
Q3. Which of the following have notochord throughout life?
Answer : Option A
Explaination / Solution:
Amphioxus or lancelets are fish like marine chordates found in shallow temperate and tropical seas. They have notochord through out their life.
Q4. Corpus spongiosum is found in
Answer : Option D
Explaination / Solution:
The corpus spongiosum is the mass of spongy tissue surrounding the male urethra within the penis. These tissues get filled with blood during copulation.
Q5. The protein portion of an enzyme is called as
Answer : Option B
Explaination / Solution:
Apoenzyme: The polypeptide or protein part of the enzyme is called the apoenzyme and may be inactive in its original synthesized structure.
The inactive form of the apoenzyme is known as a proenzyme or zymogen.
Q6. The following pie chart shows four components of blood plasma represented from first to fourth Qtr and the correct sequence will be :
Answer : Option B
Explaination / Solution:
90-92 per cent of plasma is water and proteins contribute 6-8 per cent of it. Plasma also contains small amounts of minerals and other materials such as glucose, amino acids, lipids, etc., arealso present in the plasma.
Q7. Masses of bacteria associated with fungal filaments to form mesh like structures is called
Answer : Option D
Explaination / Solution:
The masses of bacterium associated with fungal filaments to form mess like structure is called flocs. Flocs are used to remove organic wastes from waste water.
Q8. Oil spills prevent oxygenation of water so they are :
Answer : Option C
Explaination / Solution:
Physical pollution is the introduction of discarded materials into the environment. Physical pollution is what you might refer to as trash and is the direct result of human actions.
In other words, nature does not produce physical pollution because in natural systems, all byproducts or wastes are eventually recycled back into the environment. For example, in nature, a fallen tree will degrade and eventually return nutrients to the soil..
Oil splits over the water bodies is the result of human activities. It prevents the oxygenation of water. It is physical pollutants.
Q9. Which one proceeds reformation of nuclear envelope during M-phase of cell cycle?
Answer : Option D
Explaination / Solution:
Before the completion of Mitosis reapperance of nuclear membrane takes place along with formation of nucleolus so that the cells bocemo separate enetities after cytokinesis but having same chromosome number as parent cells.
Q10. The enzyme ligase is used to
Answer : Option C
Explaination / Solution:
DNA ligase is a specific type of enzyme, a ligase, that facilitates the joining of DNA strands together by catalyzing the formation of a phosphodiester bond. It plays a role in repairing single-strand breaks in duplex DNA in living organisms.
The enzyme ligase is used to join vector and gene of interest to form hybrid genome that can be introduced into vectors.
