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Select the option that correctly categorises the given animals into vertebrates and invertebrates.

Match column I with column II and select the correct option from the given codes.

When a seedling grows, it depends on the seed leaves for nutrition until the first leaves are formed.
Which of the following graph correctly identifies the changes in mass of seed leaf (X) and shoot (Y) over time?

A
B
C
D

Nutrient 'X' keeps teeth and bones healthy. It is present in orange and amla.
Deficiency of 'X' results in bleeding gums.
Identify 'X'.

AVitamin C
BCalcium
CVitamin K
DCarbohydrate

There is a certain relationship between the pair of figures on the either side of ::. Identify the relationship in the given pair and find the missing figure.


A
B
C
D

Refer to the given figures of blood cells and select the correct statements regarding X, Y and Z.


(i) X plays a key role in transporting waste carbon dioxide from the tissues to the lungs.
(ii) The pigment present in Z absorbs oxygen and transports it to the cells all over the body.
(iii) X is able to move on their own.
(iv) Y helps the blood to clot whenever there is a wound on the body.
(v) Y is important part of our immune system.
(vi) Z produces special protein substances, i.e., antibodies that protect us from infection.

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

Observe the given pictures carefully and select the correct conclusion regarding liquids X, Y and Z.


ALiquid X is transparent and liquid Z is translucent.
BLiquid Y is opaque and liquid Z is translucent.
CLiquid X is transparent and liquid Z is opaque.
DLiquid Y is transparent and liquid Z is opaque.

Ruminant stomach is divided into four compartments. Select the correctly matched option.

AOmasum - Food is broken down into smaller pieces and water is absorbed.
BRumen - Fourth chamber and is the true stomach.
CAbomasum - Largest chamber and receives half chewed food from mouth.
DReticulum - Receives half digested food and sends it back to mouth as cud.

The rain containing excess of acids is called an acid rain. Acid rain can cause damage to buildings, historical monuments, plants and animals. Where do these acids come from?

AAcids like carbonic acid, sulphuric acid and nitric acid are already present in the rain.
BRain drops become acidic by combining with acids present in air.
CAcids present in rain drops become active on coming in contact with atmosphere.
DAir pollutants like CO₂, SO₂, NO₂ dissolve in rain drops to form acids.