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

Total questions: 15

What is the main difference between monocot and dicot stems?

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

Both have vascular bundles arranged similarly.

Monocot stems lack vascular bundles.

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

None

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

Angiosperms

Pteridophytes

Bryophytes

Gymnosperms

None

What distinguishes echinoderms from other invertebrate phyla?

Jointed appendages

Exoskeleton

Presence of a notochord

Water vascular system

None

How do cnidarians capture their prey?

With stinging cells called nematocysts

By filtering water

Using a radula

Using muscular tentacles

None

Which phylum includes animals that exhibit pentaradial symmetry as adults?

Echinodermata

Annelida

Mollusca

Arthropoda

None

How do fungi obtain their nutrients?

Absorption

Chemosynthesis

Ingestion

Photosynthesis

None

Which of the following is a characteristic feature of nematodes?

Segmented bodies

Unsegmented, cylindrical bodies

Radial symmetry

Jointed limbs

None

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

External fertilization

Moist skin

Amniotic eggs

Lungs with high surface area

None

Which characteristic is unique to members of the phylum Chordata?

Radial symmetry

Jointed appendages

Notochord

Exoskeleton

None

10.

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

Annelids have radial symmetry.

Annelids have jointed appendages.

Annelids have an exoskeleton.

Annelids have a segmented body without jointed appendages.

None

11.

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

12.

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

Conducting photosynthesis

Absorbing nutrients and anchoring the plant

Releasing spores

Producing seeds

None

13.

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

Gymnosperms have naked seeds.

Gymnosperms do not produce seeds.

Gymnosperms have seeds enclosed in fruits.

Gymnosperms produce flowers.

None

14.

What is the primary role of mycorrhizae in plant biology?

Photosynthesis

Nitrogen fixation

Nutrient absorption

Water transport

None

15.

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

Radial symmetry with a water vascular system

Cylindrical, unsegmented body

Soft body often protected by a hard shell

Segmented body with jointed appendages

None

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

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