Download App

Heredity and Evolution — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHeredity and Evolution1 Mark
MCQ
For two statements are given- one labelled
Assertion $(A)$ and the other labelled
Reason $(R)$. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below:
Assertion: Traits like tallness and dwarfness in pea plant are inherited independently.
Reason: When a homozygous tall pea plant is crossed with dwarf pea plant, medium sized pea plant is obtained in $F_1$ generation.
  • A
    Both $A$ and $R$ are true, and $R$ is correct explanation of the assertion.
  • B
    Both $A$ and $R$ are true, but $R$ is not the correct explanation of the assertion.
  • ✓
    $A$ is true, but $R$ is false.
  • D
    $A$ is false, but $R$ is true.
✓

Answer

Correct option: C.
$A$ is true, but $R$ is false.
Traits like tallness and dwarfness in pea plant are inherited independently and when a homozygous tall pea plant is crossed with a dwarf pea plant, only tall pea plants are obtained in $F_1$ generation.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Assertion - Reasoning (1 Marks)" from Heredity and Evolution→Heredity and Evolution — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

For question two statements are given-one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below:
Assertion: $AlCl_3$ is a basic salt.
Reason: $AlCl_3$​​​​​​​ is a salt of strong acid and a weak base.
→
Assertion (A): In an ecosystem, the function of producers is to convert organic compounds into inorganic
compounds.
Reason (R): Green plants, the producers, transduce solar energy.
→
For question two statements are given-one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below:
Assertion: Phenolphthalein is an acid-base indicator.
Reason: Phenolphthalein gives different colours in acidic and basic medium
→
For two statements are given$-$one labelled
Assertion $(A)$ and the other labelled
Reason $(R).$ Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below:
Assertion: Fuse wire must have high resistance and low melting point.
Reason: Fuse is used for small current flow only.
→
For two statements are given $- $ one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : The plants store some of the waste products in their body parts.
Reason : Raphides are the solid waste products of plants.
→
For question two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : Both aldehydes and ketones contain carbonyl group.
Reason : In aldehydes, the functional group is attached to atleast one hydrogen atom.
→
Assertion (A): Stannous chloride is a powerful oxidising agent which oxidises mercuric chloride to mercury.
Reason (R): Stannous chloride gives a grey precipitate with mercuric chloride, but stannic chloride does not do so
→
Assertion (A): A food chain can have maximum of three trophic levels.
Reason (R): Energy available at each trophic level keeps on decreasing as we move higher up the food chain.
→
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : Genes present in every cell of an organism control the traits of the organisms.
Reason : Gene is specific segment of $\text{DNA}$ occupying specific position on a chromosome.
→
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : Gases used in cooling devices can lead to depletion of ozone layer of atmosphere.
Reason : Carbon monoxide which is widely used as coolant in refrigerator reacts with ozone and destroys it.
→