BIOLOGY CH18 Organization of Tissues — Science STD 9 — Question

State whether true or false. If false, correct the statement.

Vessels are found in collenchyma.

• True

• False

Mention the factors responsible for motion of satellite.

The direction of incident sound, direction of reflected sound and the normal are in different Planes.

State whether true or false. If false, correct the statement.

Bone and cartilage are two types of areolar connective tissues.

• True

• False

A comb rubbed with hair and brought near pieces of paper attracts them, because both comb and paper get similarly charged.

State true or false. If false, correct the statement.

In an atom, electrons revolve around the nucleus in fixed orbits.

• True

• False

The planets are revolving around the sun because of the gravitational force of attraction between them.

State whether true or false. If false, correct the statement.

ISI mark is mandatory to certify agricultural products.

• True

• False

The pole of a freely suspended magnet which points towards the north is called the south pole and what points towards south is celled north pole.

State whether true or false. If false, correct the statement.

One Celsius degree is an interval of 1K and zero degree Celsius is 273.15 K.

• True

• False