High School

1. Hepatitis "D" is also called:
(A) Serum hepatitis
(B) Infectious hepatitis
(C) Delta hepatitis
(D) Bacterial hepatitis

2. Double fertilization occurs in:
(A) Bryophyta
(B) Pteridophytes
(C) Angiosperms
(D) Gymnosperms

3. Liver secretes bile into:
(A) Stomach
(B) Duodenum
(C) Jejunum
(D) Ileum

4. Histamine is produced by:
(A) Neutrophils
(B) Eosinophils
(C) Basophils
(D) Monocytes

5. The number of species of insects in biodiversity is:
(A) 17.6%
(B) 53.1%
(C) 19.9%
(D) 9.4%

6. Dark reaction takes place in:
(A) Thylakoids
(B) Grana
(C) Stroma
(D) Mitochondria

7. Non-protein part attached to enzyme is called:
(A) Activator
(B) Coenzyme
(C) Cofactor
(D) Substrate

8. Madreporite is related to:
(A) Annelida
(B) Echinodermata
(C) Birds
(D) Mollusca

9. The left systemic arch disappears in:
(A) Amphibians
(B) Birds
(C) Fishes
(D) Reptiles

10. Mosquito inject Plasmodium to human in form of:
(A) Cyst
(B) Sporozoites
(C) Merozites
(D) Gametocytes

11. In free state, glucose is present in:
(A) Dates
(B) Amylose
(C) Glycogen
(D) Cellulose

12. Fungi can tolerate wide range of pH from:
(A) 2-9
(B) 3-10
(C) 4-11
(D) 1-13

13. Bacteria divide at exponential rate during:
(A) Decline phase
(B) Log phase
(C) Lag phase
(D) Stationary phase

Answer :

  1. Hepatitis "D" is also called: (C) Delta hepatitis

Hepatitis D virus (HDV) is known for causing "Delta hepatitis," a serious liver infection that occurs only in conjunction with Hepatitis B, since it is unable to propagate on its own.

  1. Double fertilization occurs in: (C) Angiosperms

In angiosperms, double fertilization is a key process where one sperm fertilizes the egg forming a zygote, and another sperm fuses with two other nuclei to form the triploid endosperm, which nourishes the developing embryo.

  1. Liver secretes bile into: (B) Duodenum

The liver secretes bile into the duodenum, the first segment of the small intestine. This helps in the emulsification and digestion of fats.

  1. Histamine is produced by: (C) Basophils

Basophils, a type of white blood cell, and mast cells release histamine as a part of the immune response, playing a significant role in allergic reactions and the inflammatory process.

  1. The number of species of insects in biodiversity is: (B) 53.1%

Insects represent a significant portion of global biodiversity, making up an estimated 53.1% of known species, highlighting their vast variety in ecosystems.

  1. Dark reaction takes place in: (C) Stroma

The dark reaction, or Calvin Cycle, occurs in the stroma of chloroplasts where it uses ATP and NADPH from the light reactions to synthesize glucose from carbon dioxide.

  1. Non-protein part attached to enzyme is called: (C) Cofactor

A cofactor is a non-protein chemical compound that is required for an enzyme's activity as a catalyst. They can be metal ions or organic molecules.

  1. Madreporite is related to: (B) Echinodermata

The madreporite is a porous structure involved in the water vascular system of echinoderms, such as sea stars, which helps in movement and feeding.

  1. The left systemic arch disappears in: (B) Birds

In birds, only the right systemic arch persists throughout development, while the left systemic arch typically regresses, contributing to their unique circulatory system.

  1. Mosquito inject Plasmodium to human in form of: (B) Sporozoites

Plasmodium sporozoites are the form transmitted from mosquitoes to humans, initiating malaria infection in the liver.

  1. In free state, glucose is present in: (A) Dates

Glucose is found naturally in its free state in fruits like dates, providing a quick source of energy.

  1. Fungi can tolerate wide range of pH from: (B) 3-10

Fungi have a wide pH tolerance, allowing them to thrive in various environments, typically from a pH of 3 to 10.

  1. Bacteria divide at exponential rate during: (B) Log phase

During the log phase, or exponential phase, bacteria grow rapidly, dividing at a consistent and exponential rate due to optimal growth conditions.