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Consider the given statements:

What causes the water to flow into the sieve tube at the source?
1. Diffusion of sucrose into the sieve tube, making it hypertonic.
2. Active transport of sucrose into the sieve tube, making it hypertonic.
3. Active pumping of water by the adjacent companion cell.
4. A lower water potential outside the sieve tube.

Identify the incorrectly matched pair:

Substances that have a hydrophilic moiety:
1. have to be transported across the plasma membrane by active transport
2. can diffuse across the plasma membrane at a slower rate, if larger in size
3. do not need a concentration gradient to diffuse across the plasma membrane
4. need to be facilitated even along the concentration gradient

Pyruvic acid, the key product of glycolysis can have many metabolic fates. Under aerobic condition, it forms

Which one of the following will not directly affect transpiration?

C. B. van Niel proved that:

Difference in shapes of leaves produced in air and those produced in water represents heterophyllous development due to environment in:

The process of guttation takes place
1. When the root pressure is high and the rate of transpiration is low
2. When the root pressure is low and the rate of transpiration is high
3. When the root pressure equals the rate of transpiration
4. When the root pressure as well as rate of transpiration are high

Emulsification of fats occurs in small intestine and it:
1. Results in the formation of small fat droplets
2. Depends upon the polar structure of bile salts
3. Results in the formation of chylomicrons
4. Depends upon the polar structure of bile pigments

The major mode of transport of carbon dioxide in human body is:

The external intercostal muscles and the diaphragm contract:
1. during inhalation
2. during exhalation
3. during both inhalation and exhalation
4. during neither inhalation nor exhalation.

A column-shaped cell found in the respiratory and intestinal tracts, which secretes the main component of mucus, is the:

It is necessary that lungs must be present in anatomically air-tight chamber because: 

Our teeth are
1. Acrodont and homodont
2. Homodont and polyphyodont
3. Thecodont, diphyodont and heterodont
4. Acrodont, homodont and polyphyodont

All the following regarding red muscle fibers are true except:

Conditional absorption of water takes place mainly in:

The presence of which of the following in urine would be abnormal?

Normal activities of the human heart are regulated:
1. Intrinsically
2. By the autonomic nervous system
3. By the somatic neural system
4. By the adrenal medullary hormones

The most toxic nitrogenous metabolic waste product is:

Where do you expect to find podocytes?
1. In the wall of afferent arteriole
2. In the wall of the DCT
3. In the lining of Bowman’s capsule
4. In the lining of Vasa recta

The vertebral column originally develops as a series of ______ vertebrae, but this number is eventually reduced to _________ vertebrae.

Match type of synovial joint in Column I with correct example in Column II and select the correct answer from the codes given below:

Codes

Formed elements and clotting factors are removed from the blood. The remaining fluid will be called as:

Identify the incorrectly matched pair:
1. Average duration of a cardiac cycle: 0.8 sec
2. Stroke volume of each ventricle: 120 ml
3. Highest normal systolic blood pressure: 140 mm Hg
4. Highest normal diastolic blood pressure: 90 mm Hg

Membranous labyrinth of the inner ear is surrounded by:

The duration of inspiration can be reduced by:

Hormones which interact with intracellular receptors:
1. generate second messengers
2. depolarize the membrane of the target cells
3. stop the enzymatic actions of membrane proteins
4. regulate gene expression

The actions of adrenaline will include all the following except:
1. Piloerection
2. Pupilary dilation
3. Glycogenesis
4. Positive ionotropic and chronotropic effect on heart

ADH and oxytocin are synthesized by:

When the ciliary muscles in the human eye contract:
1. the lens becomes more convex, generally improving the focus for closer objects
2. the lens becomes more convex, generally improving the focus for farther objects
3. the lens becomes more flat, generally improving the focus for closer objects
4. the lens becomes more flat, generally improving the focus for farther objects

What would be true for the cells shown in the given diagram?

1. A is involved in gestation and B in olfaction 2. A is a part of sympathetic and B of parasympathetic division of ANS 3. A secretes myelin sheath around axons in CNS while B does it in PNS 4. A is responsible for scotopic vision and B is responsible for photopic vision

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?