Improvement in Food Resources — Science STD 9 — Question

Phloem in the plant perform the function of _________.

1. Conduction of food.
2. Conduction of water.
3. Providing support.
4. Photosynthesis.

Out of the following, an example of matter which can be termed as fluid is:

Simple tissues are these:

1. Parenchyma, xylem and collenchymas.
2. Parenchyma, collenchymas and sclerenchyma.
3. Parenchyma, xylem and sclerenchyma.
4. Parenchyma, xylem and phloem.

The value of acceleration due to gravity of earth:

1. Is the same on equator and poles.
2. Is the least on poles.
3. Is the least on equator.
4. Increases from pole to equator.

Larger the slope of a displacement-time graph:

When a magnet is dropped it falls to the ground. The force which makes this happen is an example of:

The value of g on the surface of moon is:

The isotopes of an element have different number of:

The value of quantity G in the formula for gravitational force:

1. Depends on mass of the earth only.
2. Depends on the radius of earth only.
3. Depends on both mass and radius of earth.
4. Depends neither on mass nor on radius of earth.

While designing an auditorium, an engineer uses which of the following points?
A: Makes concave back stage:
B: Uses sound absorbing materials.
C: Reduces reverberation time.
D: Increases echo.