What is the site of perception of photoperiod necessary for induction of flowering in plants?

• Pulvinus

• Shoot apex

• Leaves

• Lateral buds

The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in

• Fallopian tubes and Pancreatic duct

• Eustachian tube and Salivary duct

• Bronchioles and Fallopian tubes

• Bile duct and Brochioles

Which of the following factors is responsible for the formation of concentrated urine?

• maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.

• Secretion of erythropoietin by Juxtaglomeular complex.

• Hydrostatic pressure during glomerular filtration

• low levels of antidiuretic hormone

Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following

• flaccidity of buliform cells

• shrinkage of air spaces in spongy mesophyll

• tyloses in vessels

• closure of stomata

Concanavalin A is

• an essential oil

• a lectin

• a pigment

• an alkaloid

Match the following organisms with their respective characteristics :

Select the correct option from the following:

• A - iii; B - iv; C - ii; D - i

• A - ii; B - iv; C - iii; D - i

• A - iii; B - ii; C - iv; D - i

• A - iii; B - ii; C - i; D - iv

Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL, respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?

• 1700 mL

• 2200 mL

• 2700 mL

• 1500 mL

Thiobacillus is a group of bacteria helpful in carrying out

• Chemoautotrophic fixation

• Nitrification

• Denitrification

• Nitrogen fixation

Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.

• Goblet cells

• Oxyntic cells

• Duodenal cells

• Chief cells

Which of the following statements is not correct?

• The hydrolytic enzymes of lysosomes are active under acidic pH

• Lysosomes are membrane bound structures

• Lysosomes are formed by the process of packaging in the endoplasmic reticulum

• Lysosomes have numerous hydrolytic enzymes