Read the given paragraph carefully.
The female silk (i) lays eggs. When an egg hatches, a tiny caterpillar called silkworm or (ii) crawls out. It feeds on leaves and grows. When it is ready to enter the next stage in its life cycle, it secretes a fibre made of (iii) , which hardens on exposure to air. This is the silk fibre. It covers itself completely with this fibre, to form a (iv) . At this stage, the larva is called a (v) , which grows and changes inside the covering and, a few weeks later comes out as an adult.
Select the correct sequence of words to complete the above paragraph.
A hoverfly looks like a honey bee (see the figures). Which of the following statements best explains how this adaptation helps the hoverfly to survive ?
ALooking like a honey bee keeps other animals away from the hoverfly's food.
BLooking like a honey bee allows the hoverfly to collect more pollen.
CLooking like a honey bee allows the hoverfly to blend with its environment.
DLooking like a honey bee prevents some predators from trying to eat the hoverfly.
The given group of items : milk, cottage cheese and eggs are tested for their nutrient content with the help of ____.
DCombination of both A & B
What is determined by copper sulphate and sodium hydroxide and how?
Beena, Shalu and Navpreet wanted to find out who among them had the biggest lung capacity. They decided to blow into a balloon with one breath and see how big it will become. Which of the following factors they must keep the same to make the test a fair one?
1. Colour and design pattern of the balloon
2. Size and shape of the balloon
3. When to breathe in forcibly before blowing
4. Material, balloon is made of
A 1 and 2 only
B 2 and 3 only
C 1, 3 and 4 only
D 2, 3 and 4 only
The answer is D
Sameer uses dumbbell to exercise. Which body systems are involved in bending and straightening of the arm?
A Muscular and Excretory systems
B Digestive and Nervous systems
C Muscular and Skeletal systems
D Skeletal and Reproductive systems
The answer is C
Which of the following is not correctly matched?
AThermoplastics - PVC and polystyrene
BPolycot - Polythene and cotton
CMelamine - Fire proof plastic
DRayon - Regenerated fibre
it is option d. Because polycot is polythene and cotton. Rayon is not a regenerated fibre
A negatively charged rod is moved near conducting sphere as shown. What will be the movements of the electrons and protons in the conducting sphere?
|A||move to left||move to right|
|B||move to right||move to left|
|C||does not move||move to left|
|D||move to right||does not move|