Zoology - Online Test
Q1. In a wetland the primary factor controlling the environment and the associated plant and animal life will be
Answer : Option A
Explaination / Solution:
The area that is saturated with water is called wetland. In wetland the primary factor controlling the environment and the associated plant and animal life will be water.
Q2. Pick the animals with true placenta
Answer : Option C
Explaination / Solution:
True placenta is present in Mongoose. Placenta help in transfer of nutrients and respiratory gases from mother to growing foetus.
Q3. The part of fallopian tube closest to ovary is
Answer : Option B
Explaination / Solution:
Fallopian tube or oviduct of human female is divided into three parts, Infundibulum, ampulla and isthmus. The infundibulum is closet to ovary.
Q4. The enzymes show high activity at
Answer : Option B
Explaination / Solution:
Each enzyme shows its highest activity at a particular temperature and pH called the optimum temperature and optimum pH.
Q5. Manoj has AB blood group, so he will have the following antibodies in his blood plasma :
Answer : Option D
Explaination / Solution:
AB blood group does not have any antibodies in plasma. That's why AB blood group is universal recipient.
Q6. First organic acid produced by microbial fermentation is
Answer : Option D
Explaination / Solution:
Lactic acid occurs in two isomeric forms i.e. L (+) and D (-) isomers, and as a racemic mixture (DL-lactic acid). The isolation of lactic acid from milk was done in 1798. It was the first organic acid produced by microorganisms in 1880. Today, lactic acid is competitively produced both by microbiological and chemical methods.
Q7.
Read the following statements:
i. carbondioxide is a qualitative pollutant.
ii. carbondioxide is already present in environment and is termed as pollutant when it’s concentration increases in the environment:
Answer : Option B
Explaination / Solution:
Carbon dioxide is a quantitative pollutant. This gas is already present in environment in small quantity. When its concentration increases in the environmentit is termed as pollutant. It may cause greenhouse effect also.
Q8. In animal cells, the mitotic division is seen in
Answer : Option B
Explaination / Solution:
In animals, mitotic cell division is only seen in the diploid somatic cell since mitosis produces cells with same number of chromosomes as that of parents.
Q9. The technique used to produce large number of genetically identical offspring is called as
Answer : Option A
Explaination / Solution:
Cloning is the production of an exact copy of an animal by means of asexual reproduction. Any two animals which contain exactly the same genes are called genetically identical.
An animal which is genetically identical to its parents is called clone.
The cloning of a large animal was successfully done for the first time by Ian Wilmut and his colleagues at the Roslin Institute in Edinburg.
They cloned a sheep named Dolly from its parent sheep called Finn Dorest sheep.
Q10. The part of a nephron which adds some material to the filtrate is :
Answer : Option C
Explaination / Solution:
Each nephron consists Bowman’s cup, tubules and loops of Henle’s. filtration of blood occurs in glomerulus cells present in Bowman’s cup. Some materials are added to initial filtrate in distal convoluted tubule.
