Study the given classification chart for different parts of plants that we eat. Which of
the following belongs to group a, b, c and d respectively?
Dinesh wanted to test how hard are the objects made of materials P and Q, so he performed an experiment as shown.
Which of the following shows the hardness of objects P, Q and plastic in the correct order?
Hardest → Softest, Hardest → Softest
AP → Q → Plastic
BP → Plastic → Q
CQ → Plastic → P
DPlastic → P → Q
In the given food web, P, Q, R, S, T and U are consumers. Which of these consumers are both plant
AP and S
BQ and U
CR and T
DP and U
Abhinav studied about the plants found in a region.
Following is an excerpt from the paragraph:
The stem are great at storing water. With their waxy coating, water can't escape and spines protect them from being food of animals. Their roots are shallow, and widely spread. They grow in a soil that can absorbs any rain.
Which region's plants did Abhinav study?
Given are five processes in the treatment of sewage.
Arrange the processes in the correct order and select
the correct option.
(i) In the digester tank, many anaerobic bacteria decompose the organic matter present in sludge to produce biogas.
(ii) Solids are separated from liquids by using screens.
(iii) The clarified water is passed into aeration tank that contains aerobic bacteria.
(iv) Impurities settle to the bottom of the tank in the form of sludge in sand and grit chambers.
(v) Suspended microbes settle down at the bottom as activated sludge and water is discharged into water bodies.
A (iii) → (iv) → (v) → (i) → (ii)
B (ii) → (iv) → (i) → (iii) → (v)
C (i) → (iv) → (ii) → (v) → (iii)
D (ii) → (iii) → (iv) → (v) → (i)
Read the given statements and select the option which correctly fills the blanks.
(i) Natural disaster caused by earthquakes or volcanic eruptions under the sea and oceans is called 1.
(ii) Rainwater harvesting is used to minimize the effects of 2.
(iii) 3 is a tropical storm, characterised by fast spinning winds.