Hari Harun

Asked: November 23, 2021In: Class 9 Science

Meristematic tissue contains

I. Dead cells of varying shapes II. Large nucleus with vacuole III. Large nucleus without vacuole IV. No intercellular spaces Codes

Poll

Hans Raj

Asked: November 23, 2021In: Class 9 Science

Which of the following is not a defining property of meristem?

Meristematic cells do not show the property of storage of food. Rest of the statements are characters of meristem.

Poll

Gopichand

Asked: November 22, 2021In: Class 9 Science

A particle is travelling with a constant speed. This means –

In constant speed, acceleration does not change. So, it covers equal distances in equal time intervals.

Poll

Gopal Das

Asked: November 22, 2021In: Class 9 Science

A point object transvers half the distance with velocity V⁰. The remaining part of the distance is covered with velocity V₁ for the half of the time and which velocity V₂ for the rest half. The average velocity of the object for the whole journey is –

Let “s” be total displacement, then s/2 = V⁰ t₁ or t₁ = s / 2V⁰ and, s/2 = V₁ t₂ + V₂t₃ = (V₁ + V₂) t₂ To find, Average velocity = Total displacement / Total time (should be ...

Poll

Gopal Das

Asked: November 22, 2021In: Class 9 Science

An object travels 24 m with a speed of 4 metre per second and another 32 m with a speed of 8 metre per second. The average speed of the object is

Time travel to cover 24 m with the speed of 4 metre per second, t₁ = 24/4 = 6 s Time travel to cover 32 m with the speed of 8 metre per second, t₂ = 32/8 = 4 ...