Select the correct answer using the code given below the Lists :
List-I List-II
(geologic time scale) (lifeform)
A. Pleistocene 1. Mammal
B. Human lineage 2. Paleocene
C. Permian 3. Invertebrates
D. Cambrian 4. Paddock
Code:
A B C D
(A) 2 1 4 3
(B) 2 4 1 3
(C) 3 4 1 2
(D) 3 1 4 2
The rate of respiration is much faster in aquatic animals/organisms than in terrestrial animals. To whom can the credit be given for this?
(A) more amount of dissolved oxygen in water than the amount of oxygen in the air
(B) more amount of oxygen in the air than the amount of oxygen dissolved in water
(C) presence of gills in aquatic animals
(D) less amount of dissolved oxygen in water as compared to the amount of oxygen in the air
Between which of the following does Wallace's line distinguish or separate the flora and fauna?
(A) Canada and the United States
(B) Taiga region and Tunda region
(C) Mexico and Central America
(D) South-East Asia and Australia
Consider the following statements
(A): Some invertebrates have blue blood. Reason
(R) : Hemocyanin, a copper-containing substance is found in them.
Choose the correct answer from these-
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true and R is the correct explanation of A
(C) A is correct R is incorrect
(D) A is wrong R is correct
The blood of which of the following animals is similar to that of humans?
(A) Chimpanzee
(B) Rhesus monkey
(C) Gorilla
(D) Baboon
The following animals have blood groups that are similar to humans: Chimpanzees. Gorillas. Orangutans.
Which of the following is not a non-conventional source of energy?
(A) Solar energy
(B) Natural gas
(C) Wind energy
(D) Tidal energy
Which process is responsible for the glow that appears in bubbles that emerge from water?
(A) due to reflection of light
(B) due to refraction of light
(C) due to total internal reflection of light
(D) due to scattering of light
Due to total internal reflection light gets trapped inside the bubble, making it shine.
Argon is used in 'arc welding' because-
(A) It has less reactivity with the metal.
(B) It has the ability to lower the melting point of the metal.
(C) It has high inflammability.
(D) It has high calorific value.
Which of the following is a rabi crop?
(A) Paddy
(B) Wheat
(C) Tide
(D) Bajra
Rabi season crops – Rabi crops are generally sown in the months of October and November and harvested from April to May.
Major crops of Rabi season – wheat, barley, gram, mustard, peas, berseem, rizka, green fodder, lentils, potato, rye, tobacco, lahi, oats, linseed and sunflower etc. Rabi season crops require low temperature at the time of sowing, hence they are sown in winter season. There should be a dry and warm environment for them to ripen.
What is the chemical name of vinegar?
(A) Acetone
(B) Acetic acid
(C) Formaldehyde
(D) Ethanol
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