21. Which one is a mammal?
22. Quinine, used to treat malaria is obtained from which plant's part?
23. Who among the following was the first to determine the composition of a virus?
24. Major component of cotton is
25. According to Plant (1965), in which of the following types of stomata the subsidiary cells develop from the cells lying around the mother cell of the guard cells?
26. We get morphine from
27. Which of the following is a type of bryophyte that lives in many environments and is characterised by its small, flattened leaves, root-like rhizoids and peristome?
28. Assertion (A): Some bacteria can synthesize their own food.
Reason (R): These bacteria have green matter called chloroplasts.
Reason (R): These bacteria have green matter called chloroplasts.
29. Red chillies are hot because these contain
30. The nectaries of grandular tissues present on leaves e.g., at the junction of petiole and leaf blade are known as
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