Biology · Environmental Studies

Forestry and Plant Sciences

1,005 Questions

Review important biological concepts with these questions on forestry and plant sciences. The topics include non-timber forest products, timber wood types, lichen growth, and tree structures. This content is ideal for students preparing for agriculture and biology exams.

Industrial wood productionLichen growth patternsNon-timber forest productsPapilionaceous timber woodsTree crown typesFast growing trees

Forestry and Plant Sciences Questions

Multiple choice botany movement in and out of the cell diffusion transport in vascular plants types of transport

During night, a person should not sleep under a tree because the tree

  1. Releases O$ _2$ during night.
  2. Does not release CO$ _2$ during night.
  3. Releases CO$ _2$ during night.

  4. Releases water during guttation.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photosynthesis does not take place in plants during night time as the sunlight is absent and the accumulation of carbon dioxide is more. we feel suffocated if we sleep under trees during night times are more carbon dioxide is present around the trees.

So the correct option is 'Releases CO$ _2$ during the night.'

Multiple choice biology transport in plants diffusion transport in vascular plants types of transport

Removal of a ring of bark from the trunk of a tree eventually kills it, because

  1. Water can not go up

  2. Fungi and insects attack exposed parts

  3. Food does not travel down and root becomes starved

  4. Air blocks the xylem
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In plants sugars are translocated by phloem tissue. This can be experimentally demonstrated by girdling experiments. In girdling experiments all tissues from phloem to epidermis, including secondary phloem are removed. This stops flow of sugars to plant parts below the level of girdle. Thus, the roots are starved and consequently the plant is killed.

Multiple choice biology types and parts of plants leaves root, stem, and leaves basics of roots and stem

The plants with weak stem growing by spreading on the ground are 

  1. Creepers

  2. Runners

  3. Climbers

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  1. Creeper is considered to be the plant that grows along the ground, by means of extending stem or branches and produce fiber-like roots that arise from the base of the stem and such weak stem are called prostrate stem.
  2. Runners are the stem that grows on the ground that forms adventitious roots and able to give rise to a new plant.
  3. Climbers are the plants that climb up other plant or object by the help of tendrils.
So the correct option is 'Creepers'

Multiple choice biology excretion in living organisms excretion - plants excretion in plants excretion - animals

In deciduous tree, waste is stored in

  1. Leaves

  2. Barks

  3. Roots

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deciduous trees are those that shed their leaves once in a year and new leaves are grown. these are also known as the evergreen trees.

They store their waste in old and decaying leaves so that the waste gets removed as the leaves shed.
When leaves fall from a deciduous tree they contain crystals of waste materials that have built up as a result of metabolism.
So, the correct option is 'Leaves'

Multiple choice commercial studies forests: our lifeline afforestation deforestation and its effect deforestation

Trees are known as lungs of forest.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Trees in general are known as 'lungs of Earth' because they absorb large amounts of carbon dioxide and release large amounts of oxygen due to photosynthesis. This helps maintain a balance between the proportion of oxygen and carbon dioxide in the atmosphere as the oxygen released by the plants during photosynthesis is utilized by various organisms including plants for respiration.

So, the correct answer is 'True'

Multiple choice evs - i forests: our lifeline afforestation deforestation and its effect deforestation

An anti-forest measure is

  1. Afforestation

  2. Selective grazing

  3. Clearing forest

  4. Selective felling
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Destruction of forest cover is called as deforestation. An important anti-forest measure is clearing forest. Important reasons for deforestation are a land requirement for cultivation, hydroelectric projects, human settlements, the requirement of wood and timber, mining and quarrying etc.

So, the correct answer is option C.

Multiple choice biology improvement in food resources crop yield improvement food supply crop improvement methods and organisations

All trees of a particular species were cut in a forest for making furniture. Which of the following acts wu be in favour of re-establishment of that forest?

  1. Planting trees of those species which were not found in that forest

  2. Planting trees of those species which are still present in that forest

  3. Planting trees of different species which were not present in that forest and show a high growth rate

  4. Planting trees of same species as many as that were cut in that forest
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • If the deforested forest area is replaced with only one species of trees and all other vegetation is prevented from growing back then, a monoculture forest similar to agricultural crops will be the result.
  • However, the reforestation involves planting of different lots of seed of seedlings taken from the area, often of multiple species.
  • In those areas natural regeneration of a wide variety of plant and animal species that can occur.

Multiple choice biology life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

Choose the correct answer from the alternatives given.
A nail was driven into the trunk of a tree at a point 1.5 meters above the soil level. After three years, the nail will

  1. remain where it was

  2. move side ways

  3. move up

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

Trees grow in height from the apical meristems located at the tips of branches and the main stem. A nail driven into the trunk will remain at the same height as the tree grows in girth, not in height, at that specific point.

Multiple choice physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

Why Trees are  planted along the roads?

  1. To make the roads beautiful.

  2. To reduce noise pollution.

  3. To provide shade.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Trees absorb the sound vibrations produced by various sources and hence leading in prevention of noise pollution. It also provide shades and make the roads beautiful.

Multiple choice physics sound and noise musical sound and scale pleasant, unpleasant sounds and noise pollution sound noise and pollution

Why Trees are  planted along the roads

  1. To make the roads beautiful

  2. To reduce sound

  3. To provide shade

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

Trees are planted along the roads and around buildings so that it could cut off sound vibrations produced from vehicles speakers etc. by absorbing them, hence leading in prevention of Noise pollution.

Multiple choice botany types and parts of plants plant life cycle alternation of generations life span

The leaves which fall down very soon after their formation are

  1. Deciduous

  2. Caducous

  3. Evergreen

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Depending upon the duration of leaf, the plants can be classified into caducous, decidous and evergreen. In evergreen plants, leaves are present in all the seasons and do not shed off combindled. Example includes Pine. In deciduous plants, all the leaves shed at one time. Hence, deciduous plants are without leaves during one season. Example includes Ficus. In caducous plants, leaves shed off as the new bud formation takes place. Example includes rose. In this, the leaves fall down very soon after their formation. Thus, the correct answer is 'Caducous.'

Multiple choice botany types and parts of plants plant life cycle alternation of generations life span

Plants without leaves during one season are ________.

  1. Caducous

  2. Deciduous

  3. Evergreen

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

Depending upon the duration of leaf, the plants can be classified into caducous, decidous and evergreen. In evergreen plants, leaves are present in all the seasons and do not shed off combindly. Example includes Pine. In deciduous plants, all the leaves shed at one time. Hence, deciduous plants are without leaves during one season. Example includes Ficus. In caducous plants, leaves shed off during new bud formation. Example includes rose.

Thus, the correct answer is 'Deciduous.'

Multiple choice biology improvement in food resources crop variety improvement improvement if crop varieties improvement in crop variety

Recently there was a controversy regarding the plantation of

  1. Tamarindus

  2. Eucalyptus

  3. Acacia

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Controversy regarding the plantation of Eucalyptus was because of:
Environmental implications of eucalyptus plantations, it has allelopathy on ground vegetation, has a negative impact on biodiversity, exhausts soil from nutrients, has oil in its leaves and accumulated litter leads to forest fire hazards. It also exhausts groundwater and lowers the water table. 
So, the correct answer is 'Eucalyptus'.