Science Practice Quiz 63

Q1.Which of the following is a function for which the brain is responsible?

A. Digestion of food B. Production of hormones C. Regulating the heart beat D. Filtering waste from blood

Q2.Besides regulating the heart beat, what other function is the brain responsible for?

A. Controlling blood sugar B. Balancing the body C. Generating red blood cells D. Absorbing nutrients

Q3.For unicellular organisms, what process leads to the creation of new individuals?

A. Fusion B. Budding C. Fission D. Spore formation

Q4.In organisms such as Amoeba, in which plane can the splitting of the two cells during division take place?

A. Only longitudinal plane B. Only transverse plane C. Only oblique plane D. Any plane

Q5.Which disease is caused by the unicellular organism Leishmania?

A. Malaria B. Kala-azar C. Dengue D. Typhoid

Q6.The modes by which various organisms reproduce primarily depend on what factor?

A. The environment they live in B. The availability of food C. The body design of the organisms D. Their age and maturity

Q7.Which of the following organisms are mentioned as simply splitting into two equal halves during cell division?

A. Yeast and mould B. Bacteria and protozoa C. Amoeba and Leishmania D. Humans and animals

Q8.In Activity 7.1, what substance is added to a sugar solution to observe yeast growth?

A. Salt granules B. Yeast granules C. Mould spores D. Baking soda

Q9.According to Activity 7.1, what are the ideal conditions to keep a wet slice of bread for observing mould growth?

A. Warm, dry, and bright place B. Cool, moist, and dark place C. Hot, humid, and well-lit place D. Freezing, dry, and dark place

Q10.The term 'binary fission' as illustrated in Figure 7.1(a) and 7.1(b) refers to a mode of reproduction where an organism splits into how many parts?

A. One B. Two C. Three D. Multiple

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Science Practice Quiz 63