Class 9 Practice Level 3 – Diversity In Living Organisms Set - 1

Total questions: 15

Which characteristic is unique to members of the phylum Chordata?

Radial symmetry

Notochord

Exoskeleton

Jointed appendages

None

What role do the rhizoids of bryophytes play in their survival?

Releasing spores

Absorbing nutrients and anchoring the plant

Producing seeds

Conducting photosynthesis

None

How do fungi obtain their nutrients?

Chemosynthesis

Photosynthesis

Absorption

Ingestion

None

Which of the following best describes the body plan of a mollusc?

Soft body often protected by a hard shell

Radial symmetry with a water vascular system

Segmented body with jointed appendages

Cylindrical, unsegmented body

None

How do gymnosperms differ from angiosperms in terms of reproductive structures?

Gymnosperms have naked seeds.

Gymnosperms have seeds enclosed in fruits.

Gymnosperms do not produce seeds.

Gymnosperms produce flowers.

None

What is the primary role of mycorrhizae in plant biology?

Nutrient absorption

Water transport

Photosynthesis

Nitrogen fixation

None

What is the main difference between monocot and dicot stems?

Dicot stems have scattered vascular bundles, while monocot stems have vascular bundles in a ring.

Both have vascular bundles arranged similarly.

Monocot stems have scattered vascular bundles, while dicot stems have vascular bundles in a ring.

Monocot stems lack vascular bundles.

None

What is the role of the notochord in chordate embryos?

It regulates metabolic processes.

It aids in digestion.

It functions in respiration.

It supports the developing embryo.

None

How do cnidarians capture their prey?

With stinging cells called nematocysts

Using a radula

By filtering water

Using muscular tentacles

None

10.

How do annelids differ from arthropods in terms of their body structure?

Annelids have a segmented body without jointed appendages.

Annelids have an exoskeleton.

Annelids have jointed appendages.

Annelids have radial symmetry.

None

11.

What adaptation allows reptiles to thrive in terrestrial environments compared to amphibians?

Lungs with high surface area

Moist skin

External fertilization

Amniotic eggs

None

12.

Which of the following is a characteristic feature of nematodes?

Segmented bodies

Unsegmented, cylindrical bodies

Radial symmetry

Jointed limbs

None

13.

Which phylum includes animals that exhibit pentaradial symmetry as adults?

Echinodermata

Annelida

Mollusca

Arthropoda

None

14.

Which group of plants is known for having a dominant gametophyte generation?

Gymnosperms

Bryophytes

Pteridophytes

Angiosperms

None

15.

What distinguishes echinoderms from other invertebrate phyla?

Exoskeleton

Water vascular system

Presence of a notochord

Jointed appendages

None

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Class 9 Practice Level 3 – Diversity In Living Organisms Set - 1

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