Which ofthe following unsaturated fatty acid possess four double bond?
Arachidonic acid
Linolenic acid
Oleic acid
Linoleic acid
A.
Arachidonic acid
Unsaturated acids possess one or more double bonds in their carbon chains. The general formula is CnH2n- 2xO2
Oleic acid = One double bond
Linoleric acid = Two double bonds
Linolenic acid = Three double bonds
Arachidonic acid = Four double bonds
Identify the type of placentation and its example shown in the diagram below
Axile placentation in lemon
Marginal placentation in pea
Parietal placentation in Brassica
Basal placentation in sunflower
Which among the following hormone binds to H2 receptor and stimulates the gastric acid secretion in stomach?
Gastrin
Serotonin
Histamine
Somatostatin
Statement I : Sugar beet, cabbage, carrot like plants are monocarpic.
Statement II : Both vernalisation and photoperiodism are related to flowering.
Statement I is correct, but Statement II is incorrect
Statement II is correct, but Statement I is incorrect.
Both statements are correct.
Both statements are incorrect.
Which of the following statements is incorrect?
Biotin is essential for metabolism of fats.
Calciferol is essential for maintaining levels of calcium and phosphorous in blood
Ascorbic acid is essential for normal clotting of blood.
Riboflavin is essential for releasing energy from food.
Match the following columns and choose the correct option from the codes given below
| Column I (Type of Pressure in a cell) | Column II (Characteristics) |
| A. Osmotic pressure | 1. Provide turgidity to cells, tissues and softer organs |
| B. Turgor pressure | 2. Control entry of water into cells |
| C. Wall pressure | 3. Prevents bursting of cells and limits expansion |
| D. Diffusion pressure deficit | 4. Helps in retaining water inside cells |
A - 1; B - 3; C - 2; D - 4
A - 2; B - 4; C - 1; D - 3
A - 3; B - 2; C - 4; D - 1
A - 4; B - 1; C - 3; D - 2
Which of the following has the largest number of chomosomes?
Haplopappus gracilis
Gaint redwood tree
Pisum sativum
Ophioglossum reticulatum
Plantula is a soft adhesive pad that helps cockroach in grasping the substratum firmly on which leg podomere does it occurs?
Tarsus
Trochanter
Femur
Coxa
Select the organs/parts which are derivatives of Mesoderm.
I. Nervous system (except mecroglia)
II. Heart, blood vessels
III. Spleen
IV. Kidney, ureters
V. Epithelium of larynx, trachea, bronchi and lungs
VI. Legaments, tendons and skin dermis
II, III, IV and VI
I and V
I, II and IV
III, VI and VI
