Grade 7: Biodiversity

Which of the following is an example of a plant-like protist?

• Dinoflagellate

• Amoeba

• Plasmodium

• slime mold

How does yeast reproduce?

• Through budding and spore formation.

• Through spore formation only.

• Through binary fission.

Answer explanation

Yeast can reproduce through budding and spore formation. Yeast produces spores under extremely harsh conditions such as low nutrient availability.

Which of the following is considered a prokaryote?

• Archaebacteria

• Fungi

• Plant

• Protist

Answer explanation

Archaebacteria and Eubacteria are prokaryotes.

Which of the following bacteria has a spherical shape?

• Lactobacillus

• Staphylococcus

• Mycobacterium tuberculosis

• Leptospira

Answer explanation

Bacteria with spherical/ circular cell shapes are commonly named by the term “coccus”. Rod-shaped bacteria on the other hand are called “bacillus” bacteria. While spirochete is a group of spiral-shaped bacteria like Leptospira.

Which of the following protist has no permanent shape and structure for movement and move through pseudopods?

• paramecium

• plasmodium

• amoeba

Answer explanation

Amoebas have no permanent cell structure for locomotion. It moves by changing its shape. Its shape changes when cytoplasm flows in the direction of the movement. It extends the cytoplasm of the cell and forms the pseudopods or the false feet.

Which of the following Archaebacteria can live in an acidic environment?

• Thermophile

• Halophile

• Acidophile

• Methanogen

How are fungi grouped/ classified?

• based on their shape

• based on their habitat

• based on the spores they carries

• based on the size and color

Answer explanation

Fungi are usually classified in four divisions: the Chytridiomycota (chytrids), Zygomycota (bread molds), Ascomycota (yeasts and sac fungi), and the Basidiomycota (club fungi). Placement into a division is based on the way in which the fungus reproduces sexually.

How are bacteria classified/ grouped?

• based on their habitat

• based on their shape

• based on their colors

• based on their way of reproducing

Answer explanation

Bacteria are classified according to their basic shapes.

Which of the following is an example of animal-like protist?

• plasmodium

• algae

• dinoflagellate

• diatom

Answer explanation

Algae, dinoflagellates, and diatoms are all examples of plant-like protists.

Fungi obtain nourishment from the material on which they grow.

• TRUE

• FALSE