Which of the following elements is responsible for maintaining turgor in cells?
Magnesium
Sodium
Calcium
Potassium
D.
Potassium
Potassium helps in maintaining turgidity of cells. Plants require potassium ion (K+) for protein synthesis and for the opening and closing stomata, which regulated by proton pumps to make surrounding guard cell either turgid or flaccid.
Match the items given in Column I with those in Column II and select the correct option given below:
| Column I | Column II | ||
| Function | Part of the Excretory system | ||
| a | Ultrafiltration | i | Henle's loop |
| b | Concentration of urine | ii | Ureter |
| c | Transport of urine | iii | Urinary bladder |
| d | Storage of urine | iv | Malpighian corpuscle |
| v | Proximal convoluted tubule | ||
| a | b | c | d |
| iv | v | ii | iii |
| a | b | c | d |
| iv | i | ii | iii |
| a | b | c | d |
| v | iv | i | iii |
| a | b | c | d |
| v | iv | i | ii |
The Golgi complex participates in
Fatty acid breakdown
Formation of secretory vesicles
Activation of amino acid
Respiration in bacteria
Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
Hydrilla
Yucca
Viola
Banana
What is the role of NAD+ in cellular respiration?
It functions as an enzyme.
It functions as an electron carrier.
It is the final electron acceptor for anaerobic respiration.
It is a nucleotide source for ATP synthesis.
In which of the following forms is iron absorbed by plants?
Ferric
Ferrous
Both ferric and ferrous
Free element
Match the items given in Column I with those in Column II and select the correct option given below
| Column I | Column II | ||
| a | Glycosuria | i | Accumulation of uric acid in joints |
| b | Gout | ii | Mass of crystallised salts within the kidney |
| c | Renal calculi | iii | Inflammation in glomeruli |
| d | Glomerular nephritis | iv | Presence of in glucose urine |
| a | b | c | d |
| iii | ii | iv | i |
| a | b | c | d |
| i | ii | iii | iv |
| a | b | c | d |
| iv | i | ii | iii |
| a | b | c | d |
| ii | iii | i | iv |
