Explanation

• A solar eclipse occurs when the Moon passes between the Sun and Earth, blocking sunlight.
  • It can be total, partial, or annular, depending on the alignment.
  • During a total solar eclipse, the day briefly becomes dark.

Last verified on 06-03-2026

Explanation

• In maize (Zea mays), the first structure to emerge from the seed during germination is the radical root.
• It is also known as the primary root.
• This root grows downward into the soil, anchoring the seedling and absorbing water and nutrients.

Last verified on 01-02-2026

Explanation

• Chlorophyll is a compound that is called a Chelate.
• Photosynthesis depends on the presence of chlorophyll for the absorption of light.

Additional information:

There are about six closely related chlorophylls:

1. chlorophyll a
2. chlorophyll b
3. chlorophyll c
4. chlorophyll d
5. chlorophyll e
6. chlorophyll f

Last verified on 22-01-2026

Explanation

• The endosperm is the main storage tissue in maize seeds.
• It containing nutrients like starch, proteins, and oils.
• It support the growth of the embryo during germination.

Last verified on 22-01-2026

Explanation

• Comets are small celestial bodies made of ice, dust, and rock.
• When they approach the Sun, they form bright tails of gas and dust.

• Often called “dirty snowballs” due to icy composition.
• Comets follow highly elliptical orbits around the Sun.

Last verified on 19-01-2026

Explanation

Studies show that it takes an average of 8 minutes and 20 seconds for sunlight to move from the sun to the earth.

Sunlight moves at the speed of light.

You can see that the distance of the sun from the earth = 149.6 x 106 km.

Photons emitted from the surface of the sun need to traverse the vacuum of the universe to reach our eyes.

Explanation

• The Pakistan Space and Upper Atmosphere Research Commission (SUPARCO) was established in 1961.
• It was originally formed as a Committee in 1961 and gained Commission status in 1981.
• The SUPARCO is Pakistan's national space agency and is responsible for the development of space technology and its peaceful applications in the country.
• It is headquartered in Islamabad and has technical facilities in Karachi, Lahore, Multan, Quetta, Peshawar and Gilgit.

Explanation

Opaque objects form sharp and dark shadows because they block all light from passing through, creating a clear and defined shadow.

Explanation

Penguins are the birds which do not fly but swim to go from one place to another.

Penguins have flippers which help them swim underwater.

Penguin means پنکھ دار بحری پرندہ

Explanation

Elephants, bears, chickens, monkeys, cows, wolf, birds, etc. are warm blooded animals

Warm blooded means گرم خون والا