IGCSE O Level Biology Practice Test 137
Exam Preparation: Biology Quiz Questions and Answers PDF Download - 137
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Exam Preparation: Biology Questions and Answers PDF Download: MCQ 137
In any ecosystem, the ultimate source of energy is
- plants as primary consumers
- sun as radiant energy
- secondary consumer
- heterotroph
If heat loss center is activated in hypothalamus, the control mechanism include all, but
- vasodilation
- rapid breathing
- lower metabolic activity
- lesser convection
Each nephron consists of
- distal convoluted tubule
- proximal convoluted tubule
- Bowman' capsule
- all of above
Number of alkaloids in opium are at least
- 20
- 25
- 30
- 35
Growth of bacteria in hair follicle is prevented through
- Chyle
- Chyme
- sebum
- cillia
IGCSE O Level Biology Exam Prep Tests
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O Level Biology MCQs eBook Download
College Biology Practice Questions
- Reasoning which involves specific examples of observations and leads to a general principle is
- A continuous series of species which are arranged in ancestors to descendant sequence and each descendant has been evolved from an ancestor is known as
- Group of animals which have bilateral symmetry are known as Grade
- Non-reproductive parts of a plant are
- Adult Urochordates are sessile and covered by a layer called