Daily Science Questions and Answers
Which chromosome determines the male sex in humans?
(A) X-chromosome
(B) Y-chromosome
(C) W-chromosome
(D) Z-chromosome
Correct Answer : B
Explanation :
Each person normally has one pair of sex chromosomes in each cell. The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes. Identifying genes on each chromosome is an active area of genetic research.
The stink bug is an insect of-
(A) Cotton
(B) Paddy
(C) Tobacco
(D) Brinjal
Correct Answer : B
Body organization is found in hydra-
(A) Tissue category
(B) Organ range
(C) Cellular series
(D) Acellular category
Correct Answer : A
Which one of the following is the correct taxonomic hierarchy?
(A) Jagat (Kingdom) – Sangha – Gana – Vansh – Kula – Varga – Jati
(B) Jagat – Gana – Varga – Sandha – Kul – Vansh – Jati
(C) Jagat – Varga – Gana – Sangha – Kul – Jati – Vansh
(D) Jagat – Sangha – Varga – Gana – Kul – Vansh – Jati
Correct Answer : D
Explanation :
Thus, the correct answer is 'Jagat – Sangha – Varga – Gana – Kul – Vansh – Jati
Poisonous lizard is-
(A) Draco
(B) Hemidactyls
(C) Heloderma
(D) Calotus
Correct Answer : C
If a healthy fish of fresh water is kept in salt water, then that fish
(A) dies of dehydration
(B) swells up and dies
(C) dies due to microbial infection
(D) does not experience any problem
Correct Answer : A
Which one of the following is most sensitive to environmental changes?
(A) Amphibians
(B) Reptile
(C) Mammal
(D) Insect
Correct Answer : A
In which period did mammals emerge?
(A) Triassic
(B) Jurassic
(C) Cretaceous
(D) Permian
Correct Answer : A
The number of ossicles in the ear of mammals is
(A) 2
(B) 3
(C) 4
(D) 5
Correct Answer : B
Explanation :
The mammalian middle ear contains three ossicles, which move the vibrations of the eardrum into waves in the liquid and membrane of the inward ear. There are three ossicles in every ear : Malleus, Incus, Stapes. As we have a couple of ears, so altogether there are 6 ossicles, or 3 sets of ossicles.
What are the cold-blooded animals called?
(A) Those who do not have hemoglobin in their blood
(B) Who are not fearful
(C) Whose body temperature remains constant
(D) Whose temperature keeps changing according to the environment
Correct Answer : D
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Rajesh Bhatia
A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.
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