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Q:

Branch of biology in which we study about cultivation of flowering plant

A) Phenology B) Floriculture
C) Agronomy D) Botany
 
Answer & Explanation Answer: B) Floriculture

Explanation:
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Filed Under: Biology

Q:

The volume of a rectangular solid is to be increased by 50% without altering its base. To what extent the height of the solid must be changed.

A) 50% B) 40%
C) 30% D) 20%
 
Answer & Explanation Answer: A) 50%

Explanation:

Let l, b the sides of the base, so that the area of the base = lb
remains constant.
Let ‘h’ be the height of the solid.
Volume of the solid, V = l× b× h.
Since the volume is to be increased by 50%

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams
Job Role: Bank PO

Q:

Palaeobotany is the branch of botany is which we study about

A) Animal fosills B) Plant fossils
C) Seed of plant D) Flower
 
Answer & Explanation Answer: B) Plant fossils

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Filed Under: Biology

Q:

n is an integer chosen at random from the set

{5, 7, 9, 11 }

p is chosen at random from the set

{2, 6, 10, 14, 18}

What is the probability that n + p = 23 ?

A) 0.1 B) 0.2
C) 0.25 D) 0.3
 
Answer & Explanation Answer: A) 0.1

Explanation:

Each of the integers in the first set could be combined with any from the second set, giving a total of 4 x 5 = 20 possible pairs.

Of these the combinations that could give a sum of 23 are (5 + 18), and (9 + 14)

This means that the probability of getting a sum of 23 is 2/20 = 1/10

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: GRE

Q:

There is a cylinder circumscribing the hemisphere such that their bases are common. Find the ratio of their volumes

A) 3/2 B) 5/2
C) 7/2 D) 9/2
 
Answer & Explanation Answer: A) 3/2

Explanation:

R =OA = OB = Radius of hemisphere.
= Radius of cylinder ABCD.
Height of the cylinder = BC = radius

 

Volume of cylinder/Volume of hemisphere = πr323πr3

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams
Job Role: Bank PO

Q:

Mycolog is the branch of botany in which we study about

A) Algae B) Fungi
C) Bacteria D) Virus
 
Answer & Explanation Answer: B) Fungi

Explanation:
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Filed Under: Biology

Q:

Silviculture is the branch of botany in which we study about

A) Culture of algae B) Development of forest
C) Culture of fungi D) Silciphida plant
 
Answer & Explanation Answer: B) Development of forest

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Filed Under: Biology

Q:

Branch of agriculture concerned with the production of crops

A) Agrotology B) Agronomy
C) Agrostology D) Anthropology
 
Answer & Explanation Answer: B) Agronomy

Explanation:
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Filed Under: Biology