Science Quiz – Assertion & Reason (Chapter 5-8) Part 2

Welcome to your Science Quiz – Assertion & Reason (Chapter 5-8) Part 2

Assertion (A): Gustatory receptors detect taste. Reason (R): Olfactory receptors are present in the cerebellum.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Reflex actions are automatic and rapid responses to stimuli. Reason (R): These actions are controlled by the brain.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Plants lack the nervous system but they do coordinate. Reason (R): It is so because of hormones.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Cytokinins are present in highest concentration in fruits and seeds. Reason (R): Cytokinins are responsible for promoting cell division.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Abscissic acid is responsible for wilting of leaves. Reason (R): It is a growth inhibitor.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Cerebrum acts as the main thinking part of the brain. Reason (R): Cerebrum is responsible for reasoning, speech, intelligence, sight, hearing, usage of information etc.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Endocrine glands are called as ductless glands. Reason (R): These glands directly pour their secretions into blood.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Thyroxine is secreted by thyroid gland. Reason (R): Its deficiency leads to diabetes.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): The mineral essential for the functioning of thyroid gland is Iodine. Reason (R): Use of Iodised salt in food is recommended because iodine is the active ingredient in the production of thyroxine.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): The hormone testosterone is primarily produced by the ovaries in human females. Reason (R): Oestrogen play major role in menstrual cycle and pregnancy.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Individuals that are produced by asexual reproduction are known as clones. Reason (R): They are known as clones because they are genetically identical.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Offspring produced by sexual reproduction shows variation. Reason (R): Each offspring produced by sexual reproduction inherits all the genes from each parent.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Offspring produced by asexual reproduction are genetically similar to the parents. Reason (R): Asexual reproduction involves a single parent.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): In male reproductive system, transport of sperm takes place in a fluid which also provide nutrition. Reason (R): Prostrate gland and seminal vesicles secretes in testes.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): A male and female gamete fuse to form a zygote. Reason (R): The female gamete or egg is formed in structure called ovule of an ovary.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Vasectomy is a surgical method of birth control. Reason (R): In vasectomy small portion of oviduct is cut or tied properly.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Copper-T is an intra-uterine device. Reason (R): It is placed in cervix and prevents fertilization.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): DNA acts as the information source. Reason (R): It helps in making different proteins and cellular machinery of the cell.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): A seed is a final or last product of sexual reproduction in angiosperm. Reason (R): It is a fertilized ovule that is developed into a fruit.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Menstruation is the regular discharge of blood from the thick uterine lining. Reason (R): Menstruation occurs when the egg is fertilized by sperm.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Copper-T is an intra-uterine device. Reason (R): It is placed in the uterus and prevents fertilization and implantation.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): AIDS is an incurable and a fatal bacterial infection. Reason (R): It suppresses the immune system of the body.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Human populations show a great deal of variation in traits. Reason (R): All variations in a species have equal chances of surviving in the environment in which they live.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Dominant allele is an allele whose phenotype expresses even in the presence of another allele of that gene. Reason (R): It is represented by capital letter eg., T.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): A geneticist crossed a pea plant having violet flowers with a pea plant having white flowers, he got all violet flowers in the first generation. Reason (R): White colour gene is not passed on to next generation.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): In humans, if gene (B) is responsible for black eyes and gene (b) is responsible for brown eyes, then the colour of eyes of the progeny having gene combination Bb, bb, or BB will be black only. Reason (R): The black colour of eyes is a dominant trait.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Height in pea plants is controlled by efficiency of enzymes and is thus genetically controlled. Reason (R): Cellular DNA is the information source for making proteins in the cell.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): In few reptiles, the temperature at which the fertilized eggs are kept, determines the sex of the offspring. Reason (R): The sex of a new born individual is always genetically determined.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): The sex of the children will be determined by chromosome received from the father. Reason (R): A human male has one X and one Y chromosome.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): In human beings, amles have 'XX' sex chromosomes and females have 'XY' sex chromosomes. Reason (R): Sex of the child is determined at the time of fertilization when male and female gametes fuse to form a zygote.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): The ratio of plants when mendel took pea plants with two contrasting characters was 9:3:3:1. Reason (R): The ratio of plants when mendel took pea plants with one contrasting characters was 1:1.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): All the human female gametes will have only X-chromosome. Reason (R): Females are homogametic with two X chromosomes.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): Gametes are known as the physical barriers of heredity. Reason (R): Gametes are known as the only bridge between any two generation.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): In human beings chromosomes 1-22 are identical. Reason (R): Males have XY chromosomes.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Assertion (A): In a dihybrid cross, two traits were selected while crossing pea plants. Reason (R): Law of Independant assortment states that gametes are always pure.

Both A and R are True and R is correct explanation of A

Both A and R are True and R is not the correct explanation of A

A is true but R is false

A is false but R is true

Science Quiz – Assertion & Reason (Chapter 5-8) Part 2

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