1. | secondary growth | 2. | disease resistance |
3. | reproduction | 4. | conserving water |
COLUMN I [PGR] |
COLUMN II [Discovered by] |
||
A | Auxin | P | F. W. Went |
B | Gibberellic acid | Q | E. Kurosawa |
C | Kinetin | R | Miller et al. |
D | Ethylene | S | H. H, Cousins |
A | B | C | D | |
1. | P | Q | R | S |
2. | Q | P | S | R |
3. | R | S | Q | P |
4. | S | R | P | Q |
Kranz anatomy is one of the characteristics of the leaves of:
1. Wheat
2. Sugarcane
3. Mustard
4. Potato
Substrate-level phosphorylation is one of the ways for the formation of ATP. In this process:
1. maximum ATP are produced in higher organisms
2. a high-energy phosphate group is transferred directly to ADP
3. chemiosmosis provides energy for phosphorylation
4. the protein ATP synthase works to add phosphate to ADP
A process that makes an important difference between C3 and C4 plants is:
1. Transpiration
2. Glycolysis
3. Photosynthesis
4. Photorespiration
In which one of the following do the two names refer to one and the same thing:
1. Kreb's cycle and Calvin cycle
2. Tricarboxylic acid cycle and citric acid cycle
3. Citric acid cycle and Calvin cycle
4. Tricarboxylic acid cycle and urea cycle
There can be a net gain of 38 ATP molecules during aerobic respiration of one molecule of glucose. The corresponding number for when one molecule of glucose undergoes fermentation will be:
1. | 0 | 2. | 2 |
3. | 4 | 4. | 30 |
Out of the following what is both used and produced during the glycolytic pathway?
I. ATP
II. ADP
III. Phosphate groups
IV. NADH
1. I, II and III only
2. I, II and IV only
3. I, III and IV only
4. I, II, III and IV
Carbon dioxide splits to form oxygen during:
1. photosynthesis.
2. respiration.
3. photorespiration.
4.None.
COLUMN I | COLUMN II | ||
A | Auxins | P | Terpenes |
B | Gibberellins | Q | Derivatives of carotenoids |
C | Cytokinins | R | Adenine derivative |
D | Abscisic acid | S | Indole compounds |
A | B | C | D | |
1. | S | P | R | Q |
2. | P | Q | S | R |
3. | Q | R | P | S |
4. | R | S | Q | P |
In drought-prone areas, sprays of which of the following can be used as anti-transpirant?
1. | ABA | 2. | GA3 |
3. | IAA | 4. | Benzyl amino purine |
The number of steps in the Kreb's cycle where oxidative decarboxylation takes place is:
1. | 1 | 2. | 2 |
3. | 3 | 4. | 6 |
The primary electron acceptor of photosystem II in photosynthetic plants is:
1. Iron-sulfur protein
2. Plastoquinone
3. Plastocyanin
4. Pheophytin
COLUMN I | COLUMN II | ||
A | Auxin | P | F. W. Went |
B | Gibberellin | Q | E. Kurosawa |
C | Cytokinin | R | F. Skoog and co-workers |
D | Ethylene | S | H. H. Cousins |
A | B | C | D | |
1. | P | Q | R | S |
2. | Q | R | S | P |
3. | R | S | P | Q |
4. | S | P | Q | R |
Assertion (A): | Shoot apices modify themselves into flowering apices prior to lowering. |
Reason (R): | Shoot apices are the sites of perception of light/dark in plants. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | The respiratory pathway is an amphibolic pathway. |
Reason (R): | The respiratory pathway is involved in both anabolism and catabolism. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
1. | Chlorophyll a is the chief pigment associated with photosynthesis. |
2. | In the chromatogram, carotenoids appear yellow to yellow-orange. |
3. | Accessory pigments protect chlorophyll a from photo-oxidation. |
4. | The maximum absorption of chlorophyll a is in blue and green wavelength region of light. |
1. vessels and tracheid differentiation
2. leaf abscission
3. annual plants
4. floral parts.
Each nephron does have not its own unique:
1. | Bowman’s capsule | 2. | PCT |
3. | DCT | 4. | Collecting duct |
A plant has been forcibly put into a horizontal position. After some time, the tip of this plant grows:
1. upwards.
2. downwards.
3. straight horizontally.
4. unpredictably.
Which one of the following pairs is not correctly matched?
1. | Abscisic acid - Stomatal closure |
2. | Gibberellic acid - Leaves fall |
3. | Cytokinin - Cell division |
4. | IAA - Cell wall elongation |
Which of the following diagrams describes a pivot joint?
1. | 2. | ||
2. | 4. |
What is the reason that a plant seedling bends toward sunlight?
1. Migration of auxin to the lower part of the stem due to gravity.
2. Presence of more auxin on the light side of the stem.
3. Auxin is found in greatest abundance on the dark side of the stem.
4. Auxin is destroyed more quickly on the dark side of the stem.
To maintain the pH and ionic balance of the body fluids, the proximal convoluted tubule selectively secretes all the following into the filtrate except:
1. | Hydrogen ion | 2. | Potassium ion |
3. | Ammonia | 4. | Bicarbonate ion |
The neurotransmitter released at the neuro-muscular junction is:
1. Epinephrine
2. Acetylcholine
3. Serotonin
4. GABA
The atrium and the ventricle on the same side in the human heart are separated by:
1. a thin muscular wall
2. a thick muscular wall
3. a thin fibrous tissue
4. a thick fibrous tissue
Once released from the bone marrow into the circulation, the average life span of a red blood cell is about
1. 72 hours
2. one week
3. 4 months
4. 2 years
Presence of which of the following conditions in urine is indicative of Diabetes Mellitus:
1. Uremia and Renal Calculi
2. Ketonuria and Glycosuria
3. Renal Calculi and Hyperglycaemia
4. Uremia and Ketonuria
What causes the opening of tricuspid and bicuspid valves?
1. Atrial pressure greater than pressure in the ventricles.
2. Ventricular pressure greater than pressure in the arteries.
3. Arterial pressure greater than pressure in the ventricles.
4. Ventricular pressure greater than pressure in the atria.
Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external inter-costal muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases
1. (c) and (d)
2. (a), (b) and (d)
3. only (d)
4. (a) and (b)
All the following shorten during muscle contraction except:
1. sarcomere
2. A bands
3. I bands
4. H bands
The correct statements amongst the following are:
I: | Cardiac output is volume of blood pumped by each ventricle per minute |
II: | All the four chambers of human heart are never in diastole together |
III: | The first heart sound is associated with opening of atrioventricular valves |
IV: | The pressure in pulmonary artery is equal to the pressure in aorta |
1. | Only I | 2. | Only I and IV |
3. | Only I and III | 4. | Only I, II and IV |
Increased asthmatic attacks in certain seasons are related to:
1. hot and humid environment
2. eating fruits preserved in tin containers
3. inhalation of seasonal pollen
4. low-temperature
Match the items in Column - I with those in Column - II:
Column I | Column II | ||
(a) | Podocytes | (i) | Crystallised oxalate |
(b) | Protonephridia | (ii) | Annelids |
(c) | Nephridia | (iii) | Amphioxus |
(d) | Renal calculi | (iv) | Filtration slits |
(a) | (b) | (c) | (d) | |
1. | (iii) | (iv) | (ii) | (i) |
2. | (iii) | (ii) | (iv) | (i) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iv) | (ii) | (iii) | (i) |
Which of the following types of synovial joints is not correctly matched with its location in the human body?
|
Type of joint |
Example |
1. |
Saddle |
Between metacarpals of the thumb |
2. |
Gliding |
Between carpal bones |
3. |
Pivot |
Between atlas and axis |
4. |
Hinge |
Knee joint |
The pubic bones, constituent of the coxal bone, are held together ventrally by a:
1. syndesmosis
2. diarthrotic
3. symphysis
4. synchondrosis
When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?
1. Falling O2 concentration
2. Rising CO2 concentration
3. Falling CO2 concentration
4. Rising CO2 and falling O2 concentration
Interstitial fluid resembles plasma in the same distribution of:
1. Formed elements
2. Proteins
3. Minerals
4. Enzymes
All terrestrial vertebrates, except amphibians, breathe by expanding their lungs due to
1. negative pressure within the lungs
2. positive pressure within the lungs
3. neutral pressure within the lungs
4. countercurrent pressure within the lungs
The principal nitrogenous excretory compound in humans is synthesised:
1. in kidneys but eliminated mostly through liver
2. in kidneys as well as eliminated by kidneys
3. in liver and also eliminated by the same through bile
4. in the liver, but eliminated mostly through kidneys
Which of the following factors is responsible for the formation of concentrated urine?
1. | Hydrostatic pressure during glomerular filtration. |
2. | Low levels of antidiuretic hormone. |
3. | Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys. |
4. | Secretion of erythropoietin by Juxtaglomerular complex. |
Which of the following hormones does not act through a second messenger?
1. Adrenocorticotropin
2. Insulin
3. Thyrocalcitonin
4. Triiodothyronine
When an impulse arrives at the axon terminal, it stimulates the movement of the synaptic vesicles towards the membrane. This activation of the synaptic vesicle is directly due to:
1. | Sodium ions | 2. | Calcium ions |
3. | Potassium ions | 4. | Chloride ions |
Which of the following match is correct
Hormone | Effect |
1. Oxytocin | Milk ejection hormone |
2. Glucagon | Decreases blood sugar level |
3. Adrenaline | Decreases heart rate |
4. Thyroxine | Decreases BMR |
A canal called the cerebral aqueduct passes through the midbrain. This canal connects:
1. The two lateral ventricle
2. The lateral ventricles and the third ventricle
3. The third and the fourth ventricle
4. The fourth ventricle and the central canal of the spinal cord
Exophthalmic goiter is seen in:
1. Iodine deficiency
2. Hashimoto’s disease
3. Myxedema
4. Graves’ disease
In human adult females, oxytocin
1. is secreted by anterior pituitary
2. Stimulates growth of mammary glands
3. Stimulates pituitary to secrete vasopressin
4. causes strong uterine contractions during parturition
The neurons of the olfactory epithelium extend from the outside environment directly into olfactory lobes. The olfactory lobes are the extensions of:
1. | Pre-frontal cortex | 2. | Corpus callosum |
3. | Corpora quadrigemina | 4. | Limbic system |
Identify the correct statement:
1. Sympathetic neural system is excitatory to the heart and inhibitory to the gut
2. Sympathetic neural system is inhibitory to the heart and excitatory to the gut
3. Sympathetic neural system is excitatory to the heart and to the gut
4. Sympathetic neural system is inhibitory to the heart and to the gut