Select the correct statement from the following.
AThe first metro service was started in Delhi.
BGrand Trunk Road is a National Highway.
CInternational trade is possible without the transport facilities.
DAuto rickshaw can be used for transporting goods from one country to another.
Ans 2: (Master Answer)
A. Incorrect - The first metro service was inaugurated in Kolkata in 1984 by former Prime Minister Indira Gandhi.
C. Incorrect - Transport facilities are necessary for International trade.
D. Incorrect - Auto rickshaw are used by passengers to travel short distances in the same city or village.
The given diagram shows nitrogen cycle in the ecosystem. P, Q, R, S and T represent different chemical conversion steps in the cycle.
Which process (P - T) is correctly paired with the organismal group performing that step?
I. P Nitrobacter
II. Q Bacteria symbiotic with plants
III. R Denitrifying bacteria
IV. S Nitrifying bacteria
V. T Nitrogen fixing bacteria, such as Rhizobium or cyanobacteria
AIII, IV and V
BIV and V
CI, III and IV
DIII and IV
Select the option that answers the given riddle.
I have six legs. I lay eggs but I cannot fly. Who am I?
but spider also not fly
Ans 2: (Master Answer)
A. This beak is strong and curved. Parrots have such beaks. It allows them to crack nuts, bite hard fruits and grip barks and branches of trees.
B. This beak is long, thin and tubular. Humming birds have such beaks. These beaks can be inserted into the narrow center portion of the flowers and birds can drink nectar through them.
C. This beak is broad and flat with holes. Ducks have such beaks. Ducks in ponds gulp water in these beaks, they keep the aquatic plants, fish and insects inside the beak, while water seeps out the tiny holes present in the beak.
D. This beak is strong, sharp and hooked. Eagles have such beaks. It allows them to tear off and eat the flesh of the prey.
Hence, the right answer is option B.
What would happen if frog is completely removed from the given food chain?
Grass → Grasshopper → Frog → Snake → Peacock
a. Snake population will increase.
b. Grasshopper population will increase.
c. Peacock population will increase.
d. Snake population will decline.
Ab and d
Ba and b
Cb and c
Da and c
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Ans 1: (Master Answer)
In the given food chain grass is eaten by grasshopper. Grasshoppers are eaten by frogs; Frogs are eaten by snakes, and snakes are eaten by peacocks. If frog is completely removed from the given food chain, then no-one will eat the grasshopper, so the population of grasshoppers will increase.Since frog is completely removed, Snakes will not have enough food to eat, so population of snakes will decline. Hence b and d are correct and option A is the right answer.
Identify crops X and Y from the given table and select the correct option regarding them.
ACrop X could be wheat whereas crop Y could be cotton.
BCrop X could be green gram whereas crop Y could be linseed.
CCrop X could be groundnut whereas crop Y could be jute.
DCrop X could be rice whereas crop Y could be soybean.
Select a figure amongst the options which will continue the same series as established by the Problem Figures.
Which of the following statements are incorrect ?
1. Linen is obtained from animals.
2. Nylon is man-made fibre.
3. Curry leaves are used to protect woollen clothes from insects.
4. We should wear dark coloured clothes in winter.
A1 and 2
B2 and 3
C3 and 4
D1 and 3