Tag: biology

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Questions Related to biology

Multiple choice biology plant taxonomy nomenclature in classification introduction to plant kingdom history of classification

Match the following.

Column (A) Column (B)
a. Kingdom (i) Pteridophyta
b. Subkingdom (ii) Plantae
c. Division (iii) Cryptogams

  1. a- i, b- ii, c- iii

  2. a- iii, b- i, c- ii

  3. a- ii, b- iii, c- i

  4. a- ii, b- i, c- iii
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Plantae is a kingdom, cryptogams is a subkingdom of planate. They include all non-flowering plants. Pteridophyta is a division of subkingdom cryptogams.

Therefore, the correct answer is option C.

Multiple choice biology plant taxonomy nomenclature in classification introduction to plant kingdom history of classification

  Organisms such as  plants that use light to make their own food are known as 

  1. Heterotrophs

  2. Photoautotrophs

  3. Symbionts

  4. Parasites

  5. Herbivores
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A. Heterotrophs are the organisms that feed on autotrophs or producers for their food.
B. Photoautotrophs are the organisms that use the light energy and convert it into chemical energy to make their food. For example, plants.
C. Symbionts are the organisms that form association with other organisms. The association may be commensalism, mutualism, parasitic etc.
D. Parasites are the organisms that live within or on an other organism which is called the host.
E. Herbivores are the primary consumers that feed directly on the producers (plants).
Hence organisms such as plants that use light to make their own food are known as photoautotrophs.
So, the correct answer is 'Photoautotrophs'.
Multiple choice biology soil : our life soil properties soil - properties basics of soil pollution

The pH of a fertile soil is usually around

  1. 2-3

  2. 6-7

  3. 8-10

  4. 11-12
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants grow best in neutral or slightly acidic pH. Slight acidity favours tree growth and forms forests. Slight alkalinity is however, helpful in growth of grasslands and some crop plants like legumes. Hence, for most plants a pH value of 6 to 7 is favourable.

Multiple choice biology soil : our life soil properties soil - properties basics of soil pollution

Lime is added to soil which is

  1. Sandy

  2. Alkaline

  3. Acidic

  4. Salty
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Lime is a valuable soil amendment that helps plants and lawns flourish by raising soil pH.
  • Most vegetables grow best in a slightly acidic to neutral soil, with a pH between 6.0 and 7.0 hence acidic soils having low pH is added with lime for raising its pH.
  • Hence Lime is added to soil which is acidic.
  • So, the correct answer is 'Lime'.
Multiple choice biology soil : our life soil properties soil - properties basics of soil pollution

Salinity of the soil is often caused due to

  1. Accumulation of soluble minerals near or in the surface in arid region

  2. Excessive addition of water

  3. Rapid,evaporation of surface water

  4. Excessive leaching
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Soil salinity in arid regions is primarily caused by the accumulation of soluble salts near the surface due to high evaporation rates exceeding precipitation. This prevents salts from being leached away.

Multiple choice biology soil : our life soil properties soil - properties basics of soil pollution

Major use of petroleum is in

  1. Industries

  2. Transport on land and air

  3. Factories

  4. Shipping
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Petroleum products are used as transportation fuels, fuel oils, for generation of electricity, road oils etc. major use of  petroleum is in transport.

So, the correct answer is 'Transport on land and air'

Multiple choice biology soil : our life soil properties soil - properties basics of soil pollution

Pedology refers to study of

  1. Soil

  2. Population

  3. Fossils

  4. Water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pedology refers to study of soil in their natural environment. Demography refers to study of human population. Paleontology refers to the study of fossils. Hydrology refers to the study of water.

Thus, the correct answer is 'Soil.'