Zoology - Online Test
Q1. Which of the following type of classification based on a few morphological characters
Answer : Option A
Explaination / Solution:
Artificial classification is based on a few morphological characters of organisms like flower shape, stem type and types of seeds.
Q2. Thermostat for the body is :
Answer : Option D
Explaination / Solution:
The body keeps its core temperature constant at about 37o Celsius by physiological adjustment controlled by hypothalamus, so called thermostat center.
Q3. The statistical study of human population is called
Answer : Option B
Explaination / Solution:
The statistical study of human population in a particular area that changes over time or space is called demography. It includes size, growth, density, distribution and vital statistics.
Q4. Which layer of alimentary canal forms villi?
Answer : Option C
Explaination / Solution:
Mucosa layer forms irregular folds (rugae) in the stomach and small finger-like foldings called villi in the small intestine
Q5. The first antibiotic was discovered by
Answer : Option D
Explaination / Solution:
Penicillin from fungus Penicilliumnotatum, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St. Mary's Hospital in London in 1928.
Q6. The autonomic nervous system or ANS :
i. Is truly autonomic i.e. independent of the CNS.
ii. Is also known as the VNS.
iii. Transmit impulse from CNS to involuntary organs and smooth muscles.
i. Is truly autonomic i.e. independent of the CNS.
ii. Is also known as the VNS.
iii. Transmit impulse from CNS to involuntary organs and smooth muscles.
Answer : Option B
Explaination / Solution:
The autonomic nervous system or ANS is the division of peripheral nervous system that influences the function of internal organs. ANS is also known as VNS. These nerves transmit impulse from CNS to involuntary organs and smooth muscles.
Q7. The smallest free living organism are
Answer : Option B
Explaination / Solution:
PPLO (Pleuro Pneumonia Like Organisms). They are generally smaller and multiply more rapidly than the eukaryotic cells.
Q8. Beadle and Tatum showed that each kind of mutant bread mould they studied lacked a specific enzyme. Their experiments demonstrated that
Answer : Option B
Explaination / Solution:
Sir Archibald Garrod, a British medical doctor, was the first to suggest that genes were connected to enzymes.
George W. Beadle (1903-1989) and Edward L. Tatum (1909-1975) show genes direct the synthesis of enzymes that control metabolic processes using genetic and biochemical studies of the bread mold Neurospora.
Q9. When the main pool is located in the soil and rocks, that nutrient cycle is called
Answer : Option D
Explaination / Solution:
The nutrient cycle in which reservoir is located in earth crust is called sedimentary nutrient cycle. So, soil and rock based nutrient cycles are example of sedimentary nutrient cycle.
Q10. The correct sequence of respiration is i) Breathing in oxygen ii) Transportation of gases by the blood iii) Diffusion of gases between blood and tissues iv) Diffusion of gases across alveolar membrane v) Using of oxygen and releasing of carbondioxide
Answer : Option B
Explaination / Solution:
Respiration involves breathing or pulmonary ventilation by which atmospheric air is drawn in, Diffusion of gases across alveolar membrane, Transport of gases by the blood, Diffusion of gases between blood and tissues.Utilisation of oxygen by the cells.
