Category: Biology
OSMOSIS Osmosis is defined as the movement of solvent from a region of its higher concentration to a region of its lower concentration when the two are separated by …
PLASMOLYSIS If a plant is placed in highly concentrated sugar or salt solution (hypertonic solution), water from cell sap flows out due to exosmosis through plasma membrane. Loss of …
What is Respiration Respiration can be defined as the process by which living cells break down complex high-energy food molecules into simple low energy molecules, releasing the energy trapped …
Factors affecting Photosynthesis Photosynthesis is affected by several external and internal factors. External factors affecting Photosynthesis 1. Light Three characteristics of light (i) intensity (quantity) (ii) quality (wave length) …
Photorespiration Photorespiration is a process which involves oxidation of organic compounds in plants by oxygen in the presence of light. Like ordinary respiration, this process also releases carbon from …
The Dark Reaction The dark reaction of photosynthesis reduces carbon dioxide to glucose. These reactions take place in the stroma of chloroplast. The energy required for the reduction of …
Chemical Coordination MCQ (Multiple Choice Questions and Answers) Q1. Hormones are produced by Exocrine glands Endocrine glands Holocrine glands Apocrine glands Answer: 2 Q2. An organ where a hormone …
Sense Organs MCQ (Multiple Choice Questions and Answers) Q1. Glands of Moll are modified Oil glands Tear glands Sweet glands Scent glands Answer: 3 Q2. The secretion of lachrymal …
Nervous Coordination and Integration MCQ (Multiple Choice Questions and Answers) Q1. White matter is composed of Nerve cells Nerve fibres Ependymal cells None of the above Answer: 2 Q2. …
Movement and Locomotion MCQ (Multiple Choice Questions and Answers) Q1. Locomotory organs in starfish are Tube feet Tentacles Cilia Appendages Answer: 1 Q2. Muscle that bends one part over …