Which one of the following is active transport?
A. It is the movement of a substance against a diffusion gradient with the use of energy from respiration
B. It is the movement of a substance against a diffusion gradient without the use of energy
C. It is the movement of a substance against a diffusion gradient with the use of energy from photosynthesis
D. It is the movement of a substance along a diffusion gradient with the use of energy from respiration
Answer: Option A
This Question Belongs to Biology GK Chapter Wise >> Plant Anatomy And Physiology
A. Cinnamomum - Amoora association
B. Bischofia - Dillenia association
C. Shorea - Lagerstroemia association
D. Mesua - Michelia association
Which of the following react with haemoglobin, forming methemoglobin which will not take up oxygen?
A. Nitrates
B. Nitrites
C. Carbides
D. Oxides
Internally, hydathode shows a group of loosely arranged parenchymatous cells called as
A. Epiderm
B. Epithelium
C. Ampithecium
D. Epithem
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