This series includes Multiple choice questions from basic biology that is helpful for competitive as well as in school exams. Such questions also may be asked in any quiz competitions, University entrance exams, viva tests, competitive exams like in DSSSB, SSC as a part of general awareness and everyday science. In each test, we are adding up to 30 questions so that we can easily revise all questions.
Check out these books for References
Biology Examination Guide (with MCQs)
MCQs In Medical Laboratory Technology And Molecular Biology
Super Simple Biology: The Ultimate Bitesize Study Guide
Cambridge IGCSE Biology Study and Revision Guide 2nd edition (Myp by Concept)
Check out these books for References
Biology Examination Guide (with MCQs)
MCQs In Medical Laboratory Technology And Molecular Biology
Super Simple Biology: The Ultimate Bitesize Study Guide
Cambridge IGCSE Biology Study and Revision Guide 2nd edition (Myp by Concept)
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Q.1.
The red colour of the red sea is because of-
- Red Algae
- Brown algae
- Cephaleuros
- Trichodesmium erithraeum
Answer:
(d) Trichodesmium erithraeum
Explanation: Trichodesmium erithraeum is a species of cyanobacteria that are Blue-green Algae also called sea sawdust. The red colour predominates due to the excess of C-Phycoerythrin in these algae.
Explanation: Trichodesmium erithraeum is a species of cyanobacteria that are Blue-green Algae also called sea sawdust. The red colour predominates due to the excess of C-Phycoerythrin in these algae.
Q.2.
The age of the tree can be calculated by-
- counting number of branches
- measuring its girth
- counting the number of annual rings
- measuring its height
Answer:
(c) counting the number of annual rings
Explanation: Annual rings shows the amount of wood produced during one season. Each year the trees produce new cells and arranged in concentric circles called as annual ring or growth rings. by counting these circles/ rings we can calculate the average age of a tree.
Explanation: Annual rings shows the amount of wood produced during one season. Each year the trees produce new cells and arranged in concentric circles called as annual ring or growth rings. by counting these circles/ rings we can calculate the average age of a tree.
Q.3.
Thrombosis is a disease of the-
- Thyroid gland
- blood
- brain
- lungs
Answer:
(b) blood
Explanation: Thrombosis of a disease of blood coagulation forms blood clots and blocks veins or arteries.
Explanation: Thrombosis of a disease of blood coagulation forms blood clots and blocks veins or arteries.
Q.4.
Which is collip's hormone?
- Thyroxine
- Parathormone
- Insulin
- Esterogen
Answer:
(b) Parathormone
Explanation: The hormone released from the parathyroid gland is called parathormone, parathyroid hormone (PTH), or hypercalcemic hormone. It is discovered by Philips Collip, hence called Collip's hormone. parathormone helps to maintain blood calcium levels along with calcitonin hormone.
Explanation: The hormone released from the parathyroid gland is called parathormone, parathyroid hormone (PTH), or hypercalcemic hormone. It is discovered by Philips Collip, hence called Collip's hormone. parathormone helps to maintain blood calcium levels along with calcitonin hormone.
Q.5.
Stomata are bound by a pair of guard cells. Stomata close when guard cells become-
- Turgid
- flacid
- half flacid
- small
Answer:
(b) flacid
Explanation: Stomata control the exchange of gases in leaves and also controls the loss and absorption of water. closing and opening of stomata depend on the action of guard cells. In light guard, cells absorb water, become turgid and the stoma opens. In the dark, the guard cells lose water, become flaccid and the stoma closes.
Explanation: Stomata control the exchange of gases in leaves and also controls the loss and absorption of water. closing and opening of stomata depend on the action of guard cells. In light guard, cells absorb water, become turgid and the stoma opens. In the dark, the guard cells lose water, become flaccid and the stoma closes.
Q.6.
Which of the following can be used for the biological control of musquitoes?
- Oil
- DDT
- Gamaxene
- Gambusia
Answer:
(d) Gambusia
Explanation: Gambusia is a species of freshwater fish used for the biological control of muscquitoes. Gambusia is also named mosquitofish because the fish eats mosquito larvae.
Explanation: Gambusia is a species of freshwater fish used for the biological control of muscquitoes. Gambusia is also named mosquitofish because the fish eats mosquito larvae.
Q.7.
Disease transmitted by the head louse is-
- Plague
- rabies
- typhoid
- scurvy
Answer:
(c) typhoid
Explanation: Head louse is a wingless insect, an obligate ectoparasite of humans that depends on whole life in the human scalp. It spreads skin diseases and is also known to spread typhoid fever.
Explanation: Head louse is a wingless insect, an obligate ectoparasite of humans that depends on whole life in the human scalp. It spreads skin diseases and is also known to spread typhoid fever.
Q.8.
The universal recipient belongs to the blood group
- O
- A
- B
- AB
Answer:
(d) AB
Explanation: Blood group AB is the universal recipient for blood. while blood group O is the universal donor.
Explanation: Blood group AB is the universal recipient for blood. while blood group O is the universal donor.
Q.9.
The science dealing with the fossil plants-
- Palaeobotany
- Geology
- Epistemology
- Entomology
Answer:
(a) Palaeobotany
Q.10.
The organism that lives at the cost of another living organism is called-
- Aphrodite
- saprophyte
- epiphyte
- parasite
Answer:
(d) parasite
Explanation: Parasites are organisms that feed on the food produced by the host and also feed on the host itself. i.e hookworm, tapeworm, helminths which feed on the intestine of animals or humans.
Explanation: Parasites are organisms that feed on the food produced by the host and also feed on the host itself. i.e hookworm, tapeworm, helminths which feed on the intestine of animals or humans.
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