Biology - Study Mode

[#271] Primary phloem develops from
Correct Answer

(D) provascular tissue

Explanation

Solution: Primary phloem develops from provascular tissue.

[#272] Other than spreading malaria, anopheles mosquitoes are also vectors of
Correct Answer

(B) filariasis

Explanation

Solution: Other than spreading malaria, anopheles mosquitoes are also vectors of filariasis.

[#273] Plants that grow in saline water are called
Correct Answer

(A) halophytes

Explanation

Solution: A halophyte is a salt-tolerant plant that grows in soil or waters of high salinity, coming into contact with saline water through its roots or by salt spray, such as in saline semi-deserts, mangrove swamps, marshes and sloughs and seashores.

[#274] Pyorrhoea is a disease of the
Correct Answer

(B) gums

Explanation

Solution: Pyorrhoea, or periodontal disease, to give it a proper medical term, is a disease of the gums, it is one of the most widely prevalent diseases. It affects the membrane surrounding the roots of the teeth and leads to loosening of the teeth, pus formation, and shrinkage of the gum. This disease is the primary cause for tooth loss among adults.

[#275] O 2 released in the process of photosynthesis comes from
Correct Answer

(B) water

Explanation

Solution: Photosynthesis is the process by which plants use the energy of light to produce carbohydrates and molecular oxygen (O 2 ) from carbon dioxide (CO 2 ) and water.