The type of plant tissue that has thin walls and functions in photosynthesis and storage is:
A. Xylem
B. Parenchyma
C. Sclerenchyma
D. Collenchyma
Answer: Option B
Solution (By JKSSB Mock Tests)
Parenchyma cells are living, thin-walled, and isodiametric, making up the ground tissue of plants. They are involved in photosynthesis (chlorenchyma), storage, and secretion. Collenchyma provides support with uneven thickening, sclerenchyma has lignified walls and is often dead, xylem conducts water.
Explanation:
The bicuspid valve (mitral valve) has two cusps and is located between the left atrium and left ventricle, preventing backflow during ventricular systole. The tricuspid valve is on the right side. Semilunar valves are at the exits of the aorta and pulmonary artery. Mitral valve prolapse is a common condition.
Explanation:
Photosynthesis converts light energy into chemical energy (glucose) using CO₂ and H₂O, releasing O₂. It occurs in chloroplasts. Respiration breaks down glucose, fermentation is anaerobic, chemosynthesis uses chemical energy.
Explanation:
Gregor Mendel's experiments on pea plants led to the discovery of the fundamental laws of inheritance, earning him the title father of genetics.
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