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Class 10 Exam  >  Class 10 Tests  >  Case Based Questions Test: How do Organisms Reproduce? - Class 10 MCQ

Case Based Questions Test: How do Organisms Reproduce? - Class 10 MCQ


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20 Questions MCQ Test - Case Based Questions Test: How do Organisms Reproduce?

Case Based Questions Test: How do Organisms Reproduce? for Class 10 2024 is part of Class 10 preparation. The Case Based Questions Test: How do Organisms Reproduce? questions and answers have been prepared according to the Class 10 exam syllabus.The Case Based Questions Test: How do Organisms Reproduce? MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Case Based Questions Test: How do Organisms Reproduce? below.
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Case Based Questions Test: How do Organisms Reproduce? - Question 1
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Read the following passage and answer the question :

The growing size of the human population is a cause of concern for all people. The rate of birth

and death in a given population will determine its size. Reproduction is the process by which organisms increase their population. The process of sexual maturation for reproduction is gradual and takes place while general body growth is still going on. Some degree of sexual maturation does not necessarily mean that the mind or body is ready for sexual acts or for having and bringing up children. Various contraceptive devices are being used by human beings to control the size of the population.

Q. What should be maintained for a healthy society?

Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 1
(i) Sex ratio is defined as the number of females per 1000 males in the population.

(ii) This information is an important social indicator to measure the extent of equality between males and females in a society at a given time.

(iii) The sex ratio in the country has always remained unfavourable to females. It means that the number of females per 1000 males has always remained low in our country.

Case Based Questions Test: How do Organisms Reproduce? - Question 2
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Study the diagram given below and answer the question given below :

The above process.

Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 2
Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site. The small bulb-like projection coming out from the yeast cell is known as a bud.
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Case Based Questions Test: How do Organisms Reproduce? - Question 3
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Study the diagram given below and answer the question given below :

Q. A Planaria worm is cut horizontally in the middle into two halves P and Q such that the part P contains the whole head of the worm. Another Planaria worm is cut vertically into two halves R and S in such a way that both the cut pieces R and S contain half head each. Which of the cut pieces of the two Planaria worms could regenerate to form the complete respective worms?

Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 3

Planaria reproduces through regeneration. Each part can grow into a complete organism.

Case Based Questions Test: How do Organisms Reproduce? - Question 4
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Study the diagram given below and answer the question given below :

Q. Which organism uses the above method for reproduction?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 4
Yeasts are eukaryotic microorganisms. The most common mode of vegetative growth in yeast is asexual reproduction by budding. Here, a small bud or daughter cell is formed on the parent cell. The nucleus of the parent cell splits into a daughter nucleus and migrates into the daughter cell. The bud continues to grow until it separates from the parent cell, forming a new cell.
Case Based Questions Test: How do Organisms Reproduce? - Question 5
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Study the diagram given below and answer the question given below :

Q. Among the following select the statements that are true regarding the sexual reproduction in flowering plants?

(1) Fertilisation is a compulsory event

(2) It always results in the formation of zygote

(3) Offsprings formed are clones

(4) It requires two types of gametes
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 5
Sexual reproduction is the process in which two parents are involved which produce two types of gamete i.e., male and female. The gametes fuse to form the zygote during fertilization. This is a compulsory event which allows the continuation of the species. The offsprings resulting from asexual reproduction are called clones. However, genetic recombination and variation of the offspring can be seen in sexual reproduction; hence, they are not clones.
Case Based Questions Test: How do Organisms Reproduce? - Question 6
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Study the diagram given below and answer the question given below :

Q. An organism capable of reproducing by two asexual reproduction methods one similar to the reproduction in yeast and the other similar to the reproduction in Planaria is:
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 6
Yeast reproduces by budding method and Planaria reproduces by regeneration method. The plant which reproduces by both budding and regeneration method is Hydra.
Case Based Questions Test: How do Organisms Reproduce? - Question 7
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Study the process depicted in the picture given below and answer the questions :

Q. Which of these organisms divides by the above process?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 7
Binary fission is the method of asexual reproduction in unicellular organisms. It is the process in which the parent divides into two daughter cells that are genetically and morphologically similar. During this process, the nucleus divides into two, followed by the division of the cytoplasm.

Types of binary fission seen in the organisms are as follows: Simple binary fission, Transverse binary fission, and Longitudinal binary fission.

1. Simple binary fission: This type of binary fission occurs in irregular-shaped organisms such as Amoeba, in which the plane of division is difficult to ascertain.

2. Transverse binary fission: it is the method of the division at a right angle to the long axis of the animal e.g., Paramecium and Planaria.

3. Longitudinal binary fission: In this method division is parallel to the long axis, as in Euglena, Vorticella and in some corals.

Case Based Questions Test: How do Organisms Reproduce? - Question 8
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Study the process depicted in the picture given below and answer the questions :

Q. Which of the following statements is correct about the above type of reproduction?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 8
The above type of reproduction is asexual. It involves a mature parent cell.
Case Based Questions Test: How do Organisms Reproduce? - Question 9
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Study the process depicted in the picture given below and answer the questions :

Q. Which of these are the characteristics of vegetative reproduction?

I. Involves two individuals

II. Daughter cells are genetically identical to the parent.

III. The cell division is only mitotic.
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 9

The characteristic features of vegetative reproduction are: cell division takes place by mitosis and daughter cells formed are genetically identical to the parent.

Case Based Questions Test: How do Organisms Reproduce? - Question 10
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Study the given diagram and answer any four questions from (a) to (e) as given below :

Q. Which of these plants reproduces in the same way as the given process?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 10
A fern is a member of a group of vascular plants that reproduce via spores and have neither seeds nor flowers.
Case Based Questions Test: How do Organisms Reproduce? - Question 11
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Study the given diagram and answer any four questions from (a) to (e) as given below :

Q. The above diagram depicts:
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 11
Spore formation is a method of asexual reproduction which is found in non flowering plants such as fungi (Rhizopus) and bacteria. In this method of reproduction, the parent plant produces hundreds of tiny spores which can grow into new plants.
Case Based Questions Test: How do Organisms Reproduce? - Question 12
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The given diagram represents the structure of a flower. Study the structure and answer the question:

A student decides to study the impact of removing certain flower parts on fruit formation in plant species X. He chooses three separate plants that are growing in the same plot under uniform conditions. The data is given in the table below.

Q. Which of the following can be inferred from the above data?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 12
The removal of anthers affects fruit formation in plant 1, this implies that species X relies partially on self-pollination. The removal of either anthers or stigmas affects the rate of fruit formation significantly. No fruits are observed when the stigmas in plant 2 are removed. This shows that pollen grains are probably unable to germinate if they land on any other part of the carpel besides the stigma. The petals do not seem to play a significant role in facilitating fruit formation. Species-X is therefore likely to be wind-pollinated with reduced petals.
Case Based Questions Test: How do Organisms Reproduce? - Question 13
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The given diagram represents the structure of a flower. Study the structure and answer the question:

Q. The labels A, B and C are
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 13
Flowers are beautiful to us, but for the plant they serve a critical function. Flowers are how plants produce seeds to reproduce. In many cases, the flower contains male and female parts, roughly equivalent to the male and female sexes of animals. The male parts of the flower are called the stamens and are made up of the anther at the top and the stalk or filament that supports the anther. The female elements are collectively called the pistil. The top of the pistil is called the stigma, which is a sticky surface receptive to pollen. The bottom of the pistil contains the ovary and the narrowed region in between is called the style. The male contribution or pollen is produced in the anther, and seeds develop in the ovary. Many of the fruits we eat are the thickened ovary walls surrounding the seeds.
Case Based Questions Test: How do Organisms Reproduce? - Question 14
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The given diagram represents the structure of a flower. Study the structure and answer the question:

Q. When an insect sits on the flower of a plant then some particles from the little stalks in the flowers stick to its body and when this insect sits on the flower of another plant, the particles get deposited in that flower. What are these particles?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 14
A represents pollen grains. The process of transferring pollen grains from one flower to another flower of a similar plant by insects is known as cross-pollination.
Case Based Questions Test: How do Organisms Reproduce? - Question 15
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The given diagram represents the structure of a flower. Study the structure and answer the question:

Q. Which of these is the function of a part labelled as C?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 15
The part labelled as C is Ovary. Ovary contains ovules which develop into seeds while ovary forms the fruit.
Case Based Questions Test: How do Organisms Reproduce? - Question 16
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Study the diagram given below and answer the questions:

Q. Choose the incorrect statements about the reproductive system of a plant?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 16
In a flower, the male reproductive parts are anthers which produce the male gametes.
Case Based Questions Test: How do Organisms Reproduce? - Question 17
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Study the diagram given below and answer the questions:

The part labelled as A in the diagram is:
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 17
Pollen is a fine yellowish powder that is transported from plant to plant by the wind, by birds, by insects or by other animals. The spread of pollen helps to fertilize plants — and can mean misery for seasonal allergy sufferers.
Case Based Questions Test: How do Organisms Reproduce? - Question 18
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Study the diagram given below and answer the questions:

Q. How many male gametes are produced by each pollen grain?
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 18
In flowering plants, two male gametes from a single pollen grain fuse with two female gametes, the egg and central cells, to form the embryo and endosperm, respectively.
Case Based Questions Test: How do Organisms Reproduce? - Question 19
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Study the diagram given below and answer the questions:

The part labelled as A is:
Case Based Questions Test: How do Organisms Reproduce? - Question 20
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Study the diagram given below and answer the questions:

The role of part labelled as B is:
Detailed Solution for Case Based Questions Test: How do Organisms Reproduce? - Question 20

Style facilitates the transport of the male gametes to the ovary.

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