Zoology - Online Test
Q1. Brain cavities are filled with CSF. In subarachnoid space, the CSF plays following roles :
Answer : Option A
Explaination / Solution:
Brain cavities are filled with cerebrospinal fluid (CSF). In subarachnoid space, the CSF acts as shock proof cushion to prevent in injury in case of accident.
Q2. Tubulin occurs in
Answer : Option B
Explaination / Solution:
Tubulin is a kind of protein which is present in the cilia and flagella of cells having it. It provide flexibility of the cilia and flagella.
Q3. In DNA, sugar is attached to nitrogenous base (purine or pyrimidine) through
Answer : Option D
Explaination / Solution:
In DNA, sugar and nitrogenous base are attached with each other through glycosidic bond. Phosphate and next sugar with Phosphodiester linkage and purine and pyrimidine with hydrogen bonds.
Q4. Available organic matter for herbivores is represented by
Answer : Option B
Explaination / Solution:
The organic matter available for herbivores is called net primary productivity (NPP). Total amount of organic matter fix during photosynthesis is called Gross primary productivity (GPP).
Q5. What is the difference between the two given diagrams :
Answer : Option D
Explaination / Solution:
Figure 1 represents the alveoli of healthy person and figure 2 is the alveoli of emphysema patient. The wall of alveoli is get damaged in figure 2 to reduce the surface area for exchange of gases.
Q6. Crosses between two plants by the same variety are called
Answer : Option B
Explaination / Solution:
The crosses between two plants of same varieties is called intravarietal cross. The hybrid obtained from intravarietal cross is more vigorous as they are heterogenic.
Q7. Match the following:
state
a) Tamil Nadu
b) Himachal Pradesh
c) Kerala & Tamil Nadu
d) Uttarakhand
biosphere reserve
i) Nandadevi
ii) Agasthyamalai
iii) cold desert
iv) gulf of Mannar
state
a) Tamil Nadu
b) Himachal Pradesh
c) Kerala & Tamil Nadu
d) Uttarakhand
biosphere reserve
i) Nandadevi
ii) Agasthyamalai
iii) cold desert
iv) gulf of Mannar
Answer : Option C
Explaination / Solution:
- In 1986, a group of 21 islets lying off the Tamil Nadu coast between Thoothukudi and Dhanushkodi was declared the Gulf of Mannar Marine National Park. The park and its 10 km buffer zone were declared a Biosphere Reserve in 1989.
- Cold Desert Biosphere Reserve is a biosphere reserve located in the western Himalayas region, within Himachal Pradesh state in North India.
- The Agasthyamalai Biosphere Reserve was Established in 2001 and includes 3,500.36 km² of which 1828 km² is in Kerala and 1672.36 km² is in Tamil Nadu.
- The Nanda Devi National Park, established in 1982, is a national park situated around the peak of Nanda Devi in the state of Uttarakhand in northern India.
Q8. Which one of the following group of animals is correctly matched with its characteristics without any exception?
Answer : Option A
Explaination / Solution:
All cartilaginous fish or chondrichthyes possess cartilaginous endoskeleton. But some reptiles have four chambered heart. Chordates may be jawless and some mammals lay eggs also.
Q9. The glandular tissue of each breast is divided into 15-20
Answer : Option C
Explaination / Solution:
The glandular tissue of each breast is divided into 15-20 mammary lobes which contain cluster of alveoli. Cells of alveoli secretes milk.
Q10. The diagram represent
Answer : Option B
Explaination / Solution:
The diagram shown is a uracil which is a pyramidine belonging to nitrogen bases.
