Reproduction In Plants And Humans

9.Arrange the following events in the correct order for fertilisation in a flowering plant: (a) pollen nucleus moves down pollen tube, (b) pollen grain lands on stigma, (c) zygote forms, (d) pollen tube grows down style.

10.Name the hormone responsible for male secondary sexual characteristics.

11.Match each part of the male reproductive system with its function.

12.Which of the following is NOT a method of HIV transmission?

13.What is the main difference between asexual and sexual reproduction?

14.In sexual reproduction, the fusion of the nuclei of two gametes forms a zygote.

15.Which of the following is an advantage of asexual reproduction in crop plants?

16.Match each flower part with its function.

17.Arrange the following events in the correct order for fertilisation in a flowering plant: (a) pollen nucleus moves down pollen tube, (b) pollen grain lands on stigma, (c) pollen tube grows down style, (d) pollen nucleus fuses with ovule nucleus.

18.The male hormone responsible for secondary sexual characteristics is oestrogen.

19.Which of the following is a condition required for seed germination?

20.Which of the following is a method of asexual reproduction in plants?

21.In sexual reproduction, the offspring are genetically identical to the parent.

22.Arrange the following events in the correct order for fertilisation in a flowering plant: (a) pollen tube grows down the style, (b) pollen grain lands on stigma, (c) pollen nucleus fuses with ovule nucleus, (d) pollen nucleus moves down the pollen tube.

23.Which of the following conditions are required for seed germination? (Select all that apply)

24.Which of the following is an adaptation of wind-pollinated flowers?

25.Which hormone is responsible for the development of male secondary sexual characteristics?

26.Which of the following are ways HIV can be transmitted? (Select all that apply)

27.A student investigates the conditions required for seed germination. Four boiling tubes are set up with cress seeds on cotton wool. Tube A: water and oxygen present, 20°C. Tube B: water present, no oxygen, 20°C. Tube C: no water, oxygen present, 20°C. Tube D: water and oxygen present, 4°C. After one week, which tube is expected to show the most germination?

28.Which of the following are adaptations of wind-pollinated flowers? (Select all that apply)

29.Arrange the following events in the correct order for fertilisation in a flowering plant.

30.A farmer wants to produce a crop of strawberry plants that are all genetically identical to a parent plant that has high yield and disease resistance. Which method should the farmer use?

31.HIV can be transmitted by sharing needles with an infected person.

32.Which of the following are conditions required for seed germination? (Select all that apply)

33.Which of the following are methods of asexual reproduction in plants? (Select all that apply)

34.Which of the following is the male gamete in flowering plants?

35.The nucleus of a human gamete contains 23 pairs of chromosomes.

36.Which part of the male reproductive system produces sperm?

37.Match each part of the female reproductive system with its function.

38.Which of the following is a characteristic of insect-pollinated flowers?

39.Which of the following are adaptations of insect-pollinated flowers? (Select all that apply)

40.Place the following events in the correct order for fertilisation in a flowering plant.

41.The male secondary sexual characteristics are controlled by the hormone oestrogen.

42.A student sets up four boiling tubes with cress seeds on cotton wool: Tube A: water, oxygen present, 20°C; Tube B: no water, oxygen present, 20°C; Tube C: water, oxygen present, 4°C; Tube D: water, no oxygen, 20°C. After one week, which tube would show the most germination?

43.A plant breeder wants to produce a large number of strawberry plants that are all genetically identical to a parent plant that has high yield and resistance to disease. Which method of reproduction should the breeder use?

44.The diagram shows a flower. Which labelled part is the stigma?

45.Complete the sentence: Bacteria reproduce asexually by a process called ______.

46.Complete the sentence: In humans, the male gamete is called a sperm cell and the female gamete is called an ______.

47.How many chromosomes are present in a normal human body cell?

48.Name the structure in the female reproductive system where fertilisation occurs.

49.A human sperm cell contains 23 chromosomes. How many chromosomes are in the nucleus of a human zygote?

50.Complete the sentence about the menstrual cycle.

51.Complete the sentence about asexual reproduction.

52.State two conditions required for seed germination.

53.Describe how the structure of a sperm cell is adapted for its function.

54.Explain why sexual reproduction can be advantageous for a species living in a changing environment.

55.How many chromosomes are present in a normal human body cell?

56.A human sperm cell contains 23 chromosomes. How many chromosomes are in the nucleus of a human zygote?