I. The sickle cell anaemia is a genetic disease common in tropical and sub-tropical countries.
II. The sickle cell anaemia is due to mutation in (1-globulin gene.
III. Due to the sickles-shaped aneania, oxygen carrying capacity of the haemoglobin decreases.
Which of the statements given above is/are correct?"
(a) Only I
(b) I, II and III
(c) II and III
(d) Only III
272 Q) "Which of the following statements about sexual reproduction in flowering plants are correct?
I. Stamen is present in the center of a flower.
II. Stamen produce pollen grains in the ovary.
III. The swollen bottom part of carpel is the ovary.
IV. The fusion of germ cells gives rise to zygote.
Select the correct answer using the codes given below"
(a) II, III and IV
(b) II and IV
(c) I and III
(d) All of these
I. Penguin is a mammal found in Antarctic region.
II. Penguin is an oviparous animal.
Which of the statements given above is/are correct?"
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor III
274 Q) "Consider the following statements about the relaxin hormone
I. It is a steroid hormone
II. Softens the cervix during childbirth
III. Inhibits uterine motili
Which of the statements given above is/are correct?"
(a) All of these
(b) I and II
(c) II and III
(d) Only III
275 Q) The sex of a newborn baby is determined by the chromosome inherited from
(a) the mother
(b) the father
(c) mother's mother
(d) father's father
276 Q) "The function of antennae found in cockroach is "
(a) gustatory receptor
(b) olfactory receptor
(c) tactile and sensory receptor
(d) auditory receptor
277 Q) "Consider the following statements about probiotic food.
I. Probiotic food contains live bacteria which are considered beneficial to humans.
II. Probiotic foods help in maintaining gut flora
Which of the statements given above is/are correct?"
(a)Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
278 Q) In which of the following does the germination of the embryo occur when the fruit is still attached to the plant?
(a) Rhizobium
(b) Manginifera
(c) Pineapple
(d) Mangroove plants
279 Q) People recovering from long illness are often advised to include the alga Spirulina in their diet because it
(a) makes the food easy to digest
(b) is rich in proteins
(c) has antibiotic properties
(d) restores intestinal micro flora
280 Q) To which one of the following types of organisms do mushrooms belong?
(a) Algae
(b) Ferns
(c) Lichens
(d) Fungi
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