Which one of the following is NOT a component of conducting tissue in plants?

• Fibres

• Tracheids

• Pericycle

• Sieve tubes

Which one of the following cell organelles does NOT possess nucleic acid?

• Nucleolus

• Chloroplast

• Ribosome

• Plasma Membrane

Which one of the following cell organelles does NOT possess its own genetic material encoding proteins?

• Ribosome

• Nucleus

• Mitochondria

• Chloroplast

Which one of the following organisms has vascular tissues?

• Cladophora

• Penicillium

• Marsilea

• Anabaena

Which one of the following organisms represents the primary consumer category in an ecosystem?

• Caterpillar

• Crabapple tree

• Frog

• Sparrowhawk

6.

Spring tides refer to:

• Greatest difference in the sea level at high and low tides.

• Lowest difference in the sea level at high and low tides.

• No difference in the sea level at high and low tides.

• Counteraction of gravitational pull of the Sun to that of Moon.

Which one of the following energy is stored in the links between the atoms?

• Nuclear energy

• Chemical energy

• Potential energy

• Thermal energy

The light energy escaping from the Sun can be spread by:

• A shower of rain drops

• A plane mirror

• A convex lens.

• A combination of a convex lens and a concave lens.

The correct sequence of energy transfer that occurs when an apple falls to the ground is:

• Gravitational potential energy → heat energy to air → kinetic energy → heat energy to ground and apple → sound energy.

• Gravitational potential energy → sound energy → kinetic energy → heat energy to air → heat energy to ground and apple.

• Gravitational potential energy → kinetic energy → heat energy to air → heat energy to ground and apple → sound energy.

• Gravitational potential energy → kinetic energy → sound energy → heat energy to air → heat energy to ground and apple.

Which one of the following minerals is used as a fuel in nuclear power stations?

• Bauxite

• Quartz

• Feldspa

• Pitchblende