Biology Introduction Mcqs

1.Which among the following sugars is maximum in Honey?

[A] Glucose
[B] Sucrose
[C] Fructose
[D] Maltose

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Correct Answer: C [Fructose]

Honey is a sweet, viscous food substance made by honey bees and some related insects. Honey is considered to be a mixture of D-glucose, D-fructose, and sucrose with the maximum being Fructose.

2.The hard part of a stem of a plant is because of ________?

[A] Sclerenchyma
[B] Xylem
[C] Pholem
[D] Stomata

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Correct Answer: B [Xylem]

The hard part of a stem of a plant is because of Xylem. Stem supports leaves, flowers and fruits. It also transports fluids between the roots and the shoots in the xylem and phloem, stores nutrients, and produces new living tissue.

3.Consumption of a high amount of which of the following may cause cirrhosis ?

[A] Alcohol
[B] Tobacco
[C] Caffeine
[D] Soft drinks

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Correct Answer: A [Alcohol]

Alcoholic cirrhosis develops for between 10% and 20% of individuals who drink heavily for a decade or more

4.How many vertebrae does a human being have ?

[A] 33
[B] 36
[C] 29
[D] 19

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Correct Answer: A [33]

The vertebral column usually consists of 33 vertebrae: 24 presacral vertebrae (7 cervical, 12 thoracic, and 5 lumbar) followed by the sacrum (5 fused sacral vertebrae) and the coccyx (4 frequently fused coccygeal vertebrae).

5.Which among the following is not correctly matched?

[A] Penicillin – Alexander Flemming
[B] Barometer – Torricelli
[C] X- Ray – W. Roentgen
[D] Parachute – W H carothers

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Correct Answer: D [Parachute – W H carothers]

Parachute was discovered by Louis Lenormand

6.Which among the following is NOT a true bast fiber?

[A] Jute
[B] Hemp
[C] Flax
[D] Cotton

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Correct Answer: D [Cotton]

Please note that Bast Fibers are obtained from Phloem

7.Germplasm theory was given by which of the following biologists?

[A] August Weismann
[B] Georges Cuvier
[C] Arthur Tansley
[D] None of these

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Correct Answer: A [August Weismann]

Germ-plasm theory, the concept of the physical basis of heredity, articulated by the 19th century biologist August Weismann.

8.Which of the following organelles is absent in animal cells and present in plant cells?

[A] Cytoplasm
[B] Cell wall
[C] Vacuoles
[D] Mitochondria

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Correct Answer: B [Cell wall]

The cell wall surrounds the plasma membrane of plant cells. The cell wall is a fairly rigid layer that surrounds a cell located outside the plasma membrane.

9.All of the following are functions of vacuoles, except___?

[A] Provide aqueous environment for accumulation
[B] Play a role in growth by elongation of cells
[C] Maintains turgor of plant cells
[D] None of these

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Correct Answer: D [None of these]

The main functions of the vacuole include maintaining cell acidity and turgor pressure, regulating the storage and transport of substances, controlling the transport and localization of key proteins through the endocytic and lysosomal-vacuolar transport pathways, and responding to biotic and abiotic stresses.

10.On which of the following do putrefying bacteria act?

[A] Fat
[B] Protein
[C] Carbohydrate
[D] Vitamins

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Correct Answer: 0 []

Putrefying bacteria is also known as decay bacteria. Protein is one of the sources of energy for putrefying bacteria. So, putrefying bacteria will act on Proteins.

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