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

Total questions: 15

Which of the following is a characteristic feature of nematodes?

Unsegmented, cylindrical bodies

Radial symmetry

Jointed limbs

Segmented bodies

None

What distinguishes echinoderms from other invertebrate phyla?

Presence of a notochord

Jointed appendages

Exoskeleton

Water vascular system

None

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

Gymnosperms do not produce seeds.

Gymnosperms have seeds enclosed in fruits.

Gymnosperms produce flowers.

Gymnosperms have naked seeds.

None

How do fungi obtain their nutrients?

Absorption

Chemosynthesis

Ingestion

Photosynthesis

None

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

External fertilization

Moist skin

Lungs with high surface area

Amniotic eggs

None

What is the role of the notochord in chordate embryos?

It regulates metabolic processes.

It supports the developing embryo.

It functions in respiration.

It aids in digestion.

None

What is the main difference between monocot and dicot stems?

Monocot stems lack vascular bundles.

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.

None

What is the primary role of mycorrhizae in plant biology?

Photosynthesis

Nutrient absorption

Water transport

Nitrogen fixation

None

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

Annelids have radial symmetry.

Annelids have jointed appendages.

Annelids have a segmented body without jointed appendages.

Annelids have an exoskeleton.

None

10.

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

Conducting photosynthesis

Releasing spores

Absorbing nutrients and anchoring the plant

Producing seeds

None

11.

Which phylum includes animals that exhibit pentaradial symmetry as adults?

Mollusca

Annelida

Arthropoda

Echinodermata

None

12.

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

Gymnosperms

Angiosperms

Pteridophytes

Bryophytes

None

13.

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

Radial symmetry with a water vascular system

Segmented body with jointed appendages

Cylindrical, unsegmented body

Soft body often protected by a hard shell

None

14.

Which characteristic is unique to members of the phylum Chordata?

Exoskeleton

Jointed appendages

Radial symmetry

Notochord

None

15.

How do cnidarians capture their prey?

Using a radula

With stinging cells called nematocysts

By filtering water

Using muscular tentacles

None

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

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