Answer :
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
