Biology Questions

Q:

Higher doses of barbiturates result in

A) Lack of emotional control B) Impaired thinking
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

1 3002
Q:

Which statement describes decomposers?

A) Decomposers are insignificant organisms in the ecosystem and can be absent in some ecosystems. B) Decomposers can produce their own source of energy and can sometimes act as primary producers.
C) Decomposers are those organisms that recycle matter in the ecosystem.. D) All the above
 
Answer & Explanation Answer: C) Decomposers are those organisms that recycle matter in the ecosystem..

Explanation:

Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition.

 

The statement "Decomposers are those organisms that recycle matter in the ecosystem" describes decomposers.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

2 3002
Q:

Select the correct statement contrasting gametophytes and sporophytes.

A) Sporophytes are diploid, whereas gametophytes are haploid. B) Sporophytes are vascular, whereas gametophytes are nonvascular.
C) Sporophytes are larger than gametophytes. D) All of the above
 
Answer & Explanation Answer: A) Sporophytes are diploid, whereas gametophytes are haploid.

Explanation:

Sexual reproduction results in gametes that combine two cells from different individuals. Meiosis also produces gametes. Haploids contain one set of chromosomes in each of their cells. Diploids cells contain two chromosome sets. For plants, haploid and diploid cells divide via mitosis. The plants’ haploid phase is called the gametophyte, and the diploid phase is called the sporophyte.

 

Sporophytes are diploid plants that use meiosis to produce spores. These spores are haploid cells that grow into haploid gametophytes. Megaspores grow into female gametophytes, and microspores grow into male gametophytes.

 

Gametophytes are haploid plants that use mitosis to make haploid gametes. These gametes are female in the form of an ovum (egg) or male in the form of sperm.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE

2 3001
Q:

Appetite is triggered by

A) stomach enzymes B) pancreatic enzymes
C) physiological drive D) environmental cues such as the smell or taste of food
 
Answer & Explanation Answer: D) environmental cues such as the smell or taste of food

Explanation:

Appetite is the desire to eat food, sometimes due to hunger. Appetite is triggered by environmental cues such as the smell or taste of food. Appealing foods can stimulate appetite even when hunger is absent.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

3 3000
Q:

Which of the following is an Autoimmune disease?

A) Systematic lupus erythematosus B) Acute anaphylaxis
C) Farmer's lung D) A heart attack
 
Answer & Explanation Answer: A) Systematic lupus erythematosus

Explanation:

An autoimmune disease is a condition in which your immune system mistakenly attacks your body.

 

The immune system normally guards against germs like bacteria and viruses. When it senses these foreign invaders, it sends out an army of fighter cells to attack them. Normally, the immune system can tell the difference between foreign cells and your own cells.

 

In an autoimmune disease, the immune system mistakes part of your body — like your joints or skin — as foreign. It releases proteins called autoantibodies that attack healthy cells. Some autoimmune diseases target only one organ. Type 1 diabetes damages the pancreas. Other diseases, like lupus, affect the whole body.

 

Hence, Systematic lupus erythematosus is an autoimmune disease that affects multiple organs.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: Bank Exams , AIEEE
Job Role: Bank PO , Analyst

3 2999
Q:

Flowers in which polllination takes place by insect their pollen grains are ________

A) Smooth and dry B) Rough and sticky
C) Rough and dry D) Large in Size
 
Answer & Explanation Answer: B) Rough and sticky

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

6 2991
Q:

Muscles get tired when there is shortfall of ___________.

A) Lactic acid B) Na+ ions
C) ATP D) Sulphates
 
Answer & Explanation Answer: C) ATP

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: Bank Exams

4 2978
Q:

Important component that helps in clotting of the blood is called ____.

A) Haemoglobin B) Platelets
C) Serum D) Plasma
 
Answer & Explanation Answer: B) Platelets

Explanation:

Blood Platelets are the components of the blood that are helpful in clotting of the blood.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

14 2972