User Forum

Which of the following products is not obtained from a forest?

A Honey
B Catechu
C Gum
D Ginger

Pick the option which gives the names of a tree and an animal, respectively from the following.

A Semal, hornbill
B Sal, khair
C Chinkara, blue bull
D Neem, palash

Assertion : Atmospheric nitrogen is always fixed by nitrogen-fixing microorganisms.
Reason : They convert ammonia present in atmosphere to nitrites and nitrates.
In each of the following questions, a statement of Assertion is given and a corresponding statement of Reason is given just below it. Of the four statements, given below, mark one as the correct answer

A if both Assertion and Reason are true and Reason is the correct explanation of Assertion
B if both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C if Assertion is true but Reason is false
D if both Assertion and Reason are false.

They are pipe-like, consisting of a group of specialised cells. They transport substances and form a two-way traffic in plants. Which of the following terms qualify for the features mentioned above?

A Xylem tissue
B Vascular tissue
C Root hair
D Phloem tissue

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : Plants do not take in nitrogen.
Reason : Nitrogen is harmful for plants.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If assertion is false but reason is true.

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : Water lily plant has small, thin and needle like leaves.
Reason : Water lily is a submerged aquatic plant.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If assertion is false but reason is true.

Read the following statements with reference to the villi of small intestine.
(i) They have very thin walls.
(ii) They have a network of thin and small blood vessels close to the surface.
(iii) They have small pores through which food can easily pass.
(iv) They are finger-like projections.
Identify those statements which enable the villi to absorb digested food.

A (i), (ii) and (iv)
B (ii), (iii) and (iv)
C (iii) and (iv)
D (i) and (iv)

Given below from (i) to (iv) are some food items.
(i) Boiled and mashed potato
(ii) Glucose solution
(iii) A slice of bread
(iv) Mustard oil
Which of the above will give blue-black colour when tested with iodine?

A (i) and (ii)
B (i) and (iii)
C (ii) and (iii)
D (iii) and (iv).

Choose the correct statement with respect to unicellular organisms.

A In unicellular organisms, tissues work in coordination to perform different functions.
B Unicellular organisms do not require food.
C Unicellular organisms respire and reproduce.
D All unicellular organisms move by cilia.