DIRECTIONS: Read the passage(s) given below and answer the questions that follow. Passage- The cell which results after fusion of gametes is called a zygote. The fusion of male and female gametes (to form a zygote) is called fertilization. The zygote develops into an embryo. The cell which results after fusion of male gametes and female gametes is called
(a) zygote
(b) fertilization
(c) embryo
(d) none of these
Correct Answer: (a) zygote
Explanation:
Reproduction is the biological process by which organisms give birth or give rise to a new organism. It is broadly classified into two types- asexual reproduction, and sexual reproduction.
Sexual reproduction involves the fusion of male and female gametes to form a zygote, i.e. it involves the process of fertilization. The offspring receives genetic information from both parents.
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- The correct sequence of reproductive stages occurring in flowering plants is:(a) gametes, zygote, embryo, seed (b) zygote, gametes, embryo, gametes(c) seed, embryo, zygote, gametes (d) gametes, embryo, zygote, seed
- Which of the following statements is/are false?a. The male gamete is larger, with a nucleus and more cytoplasm than the female gamete. b. The fusion of the two gametes is called fertilization. c. The product of fusion of the two gametes is called the zygote.(a) Only a(b) Only a and b(c) Only b(d) Only b and c(e) Only c
- What are gametes and zygote?
- (a) What are gametes?(b) In which sort of reproduction are gametes involved?(c) What is formed when two gametes fuse?(d) What is this act of fusion called?
- Fertilisation Is the Process of (A) Transfer of Male Gamete to Female Gamete. (B) Fusion of Nuclei of Male and Female Gamete. (C) Adhesion of Male and Female Reproductive Organs. (D) The Formation of Gametes by A Reproductive Organ. Justify Your Answer.
- Name the male and female gametes in animals.
- Describe female and male gametes in flower.
- In tobacco plant, the male gametes have twenty four chromosomes. What is the number of chromosomes in the female gamete? What is the number of chromosomes in the zygote?
- In tobacco plant, the male gametes have 24 chromosomes.(i) What is the number of chromosomes in the female gamete? (ii) What is the number of chromosomes in the zygote?
- The person A has only B chromosomes in all its gametes. On the other hand, another person C has chromosome D in half of gametes and chromosome E in the other half of gametes. When chromosomes B and D combine during fertilisation, a female zygote results. On the other hand, combination of B and E chromosomes produces a male zygote.(a) What are chromosomes (i) B (ii) D, and (iii) E? (b) Out of B, D and E, which two chromosomes are of the same type? (c) Which chromosome is smaller in size? (d) What is the general name of chromosomes such as B and E? (e) Out of the two persons A and C, which one is (i) male, and (ii) female?
- Fill in the blanks:(a) The production of new individuals from the vegetative part of the parent is called _____.(b) A flower may have either male or female reproductive parts. Such a flower is called _______.(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as _____.(d) The fusion of male and female gametes is termed as _____.(e) Seed dispersal takes place by means of _____, _____, and _____.
- The human animal which has an XY pair of chromosomes is called:(a) male (b) hybrid (c) female (d) doomed
- DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 Plants have pipe-like vessels made up of special cells, forming the vascular tissues, for transport of water and nutrients from the soil. These vascular tissues are called xylem. The transportation of food is done by vascular tissue called phloem. Which of the following are involved in transport of substances in plants?(a) Xylem(b) Phloem(c) Both of these(d) None of these
- The advantage that internal fertilisation has over external fertilisation is that in internal fertilisation:(a) new off-springs are exactly like the parent (b) production of large numbers of gametes is unnecessary (c) copulation and fusion of gametes is passive (d) fewer individuals are produced
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