31.

How many plants in the list given below have composite fruits that develop from an inflorescence?
Walnut, poppy, radish, fig, pineapple, apple, tomato, mulberry

• Four

• Five

• Two

• Two

Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it(mostly the nucleus)

• Insulin and glucagon

• Thyroxin and insulin

• Somartostatin and oxytocin

• Somartostatin and oxytocin

Nuclear membrane is absent 

• Penicillium

• Agaricus

• Volvox

• Volvox

Which one is the most abundant protein in the animal world?

• Trypsin

• Haemoglobin

• Collagen

• Collagen

Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?

• Diplontic life style

• Members of kingdom-Plantae

• Mode of nutrition

• Mode of nutrition

Which one out of A – D given below correctly represents the structural formula of the basic amino acid?

• C

• D

• A

• A

What is correct to say about the hormone action in humans?

• Glucagon is secreted by -cells of Islets of Langerhans and stimulates glycogenolysis

• Secretion of thymosine is stimulated with ageing

• In females, FSH first binds with specific receptors on ovarian cell membrane

• In females, FSH first binds with specific receptors on ovarian cell membrane

Closed vascular bundles lack

• ground tissue

• conjunctive tissue

• cambium

• cambium

Which one of the following is the correct statement for respiration in humans?

• Cigarette smoking may lead to inflammation of bronchi 

• Neural signals from pneumotoxic centre in pons region of brain can increase the duration of inspiration

• Workers in grinding and stone-breaking industries may suffer, from lung fibrosis.

• Workers in grinding and stone-breaking industries may suffer, from lung fibrosis.

Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage?

• Prophase-I during meiosis

• Prophase-II during meiosis

• Prophase of mitosis

• Prophase of mitosis