MCQ
Which of the following statements is correct?
  • African catfish is not a threat to indigenous catfishes.
  • B
    Parthenium is an endemic species of our country.
  • C
    Steller’s sea cow is an extinct animal.
  • D
    Lantana is popularly known as carrot grass.

Answer

Correct option: A.
African catfish is not a threat to indigenous catfishes.

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

Similar questions

Sperms formed from $4$ primary spermatocytes are
Production of a human protein in bacteria by genetic engineering is possible because
Which variety of rice was patented by a $U.S.$ company even though the highest number of varieties of this rice is found in India ?
The production of gametes by the parents, formation of zygotes, the $\mathrm{F}_{1}$ and $\mathrm{F}_{2}$ plants, can be understood from a diagram called:
What percentage of homozygous $R h^{-i i}$ will be born amongst four children of a couple where the husband is heterozygous for $R h^{+i i}$ and wife is homozygous for $R h^{-i i}$ gene?
Which of the following is hormone­releasing $IUD$ ?
Assertion $(A):$ A person goes to high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart palpitations.

Reason $(R):$ Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.

In the light of the above statements, choose the correct answer from the options given below.

Which of the following statements regarding species interdependence are true?

$I.$ An Association of two species where one is benefitted and other remains unaffected is called mutualism.

$II.$ An interspecific association where both partners derive benefit from each other is called commensalism.

$III.$ A direct food relation between two species of animals in which one animal kills and feeds on another is referred as predation.

$IV.$ A relationship between two species of organisms where both are partners are

benefitted from each other is called symbiosis

Parallelism is:
Assertion : In Mirabilis, selfing of $F_1$ pink flower plants produces same phenotypic & genotypic ratio.

Reason : Flower colour gene shows incomplete dominance.