A male silkworm moth can detect the specific scent (pheromones) emitted by a female silkworm moth from several kilometers away using highly sensitive receptors on its antennae.
17. Which dance form have movements similar to snake movements?
(A) Bharatanatyam
(B) Kathak
(C) Kalbeliya
(D) Bhangda
Answer:
(C) Kalbeliya
Explanation:
Kalbeliya is a folk dance from Rajasthan performed by a community of traditional snake charmers. The flowing, sinuous dance movements vividly replicate the movements of a snake.
18. How much time is required to prepare the ‘Mamidi Tandra’?
(A) 10 weeks
(B) 6 weeks
(C) 9 weeks
(D) 4 weeks
Answer:
(D) 4 weeks
Explanation:
Mamidi Tandra (Aam Papad or mango jelly) requires laying down layers of mango pulp and continuously sun-drying it layer by layer, a process that traditionally takes about 4 weeks.
19. Which part of a seed stores the baby plant?
(A) Cotyledons
(B) Seed coat
(C) Embryo
(D) None
Answer:
(A) Cotyledons
Explanation:
While the embryo is the baby plant itself, the cotyledons (seed leaves) act as the storage unit that holds the vital food and nutrients the baby plant requires to germinate and grow initially. (Note: The exam key accepts A, interpreting “stores” in relation to the food for the baby plant).
20. What did Gandhiji do to break the salt law?
(A) Champaran March
(B) Ahmedabad March
(C) Dandi March
(D) Kheda March
Answer:
(C) Dandi March
Explanation:
In 1930, Mahatma Gandhi marched to the coastal village of Dandi and collected salt directly from the Arabian Sea, symbolically and literally breaking the British Salt Law.
