Biology · Environmental Studies

Forestry and Plant Sciences

985 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 commercial applications forest and wildlife laws - environmental ethics and resource use environmental conservation. our social responsibility conservation of forest laws and movements for the conservation of forests and wildlife

A forestation with the pin pose of environmental, aesthetic and economic development is known as ______________.

  1. Integrated afforest ion

  2. Scientific forest conservation

  3. Social forestry

  4. Integrated forest management
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice commercial applications forest and wildlife laws - environmental ethics and resource use environmental conservation. our social responsibility conservation of forest laws and movements for the conservation of forests and wildlife

Afforestation should be with

  1. exotic species

  2. indigenous species

  3. bamboos

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

Afforestation is most effective and ecologically sound when using indigenous species, as they are already adapted to the local climate and support local biodiversity.

Multiple choice evs forests: our lifeline food material and source sources of food and food habits of animals seed dispersal

The decomposers in the forest perform 

  1. Production of the plants

  2. Decomposition of the plants and animals

  3. Breakdown of the forests

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

Decomposers are saprotrophs, which decompose the organic remains of plants and animals by secreting extracellular digestive enzymes. Due to degradation of organic remains, decomposers are also called reducers. Heterotrophic bacteria and saprophytic fungi are the important organisms which usually act as decomposers. Thus, the correct answer is option B.

Multiple choice biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling plastic waste thermocol reduce, recycle, reuse

......... of paper is made up of trees.

  1. 50%

  2. 10%

  3. 95%

  4. 5%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Paper is made from the cellulose fibres which are obtained from the wood of the trees. The cellulose fibres are converted to pulp. This pulp is treated with various chemicals and then dried to form the sheets of paper. There are substances like lignin in the wood of trees which results in the paper to become yellow and brittle over some time. So, the yield from the trees for paper production is about 95%. 

Thus, the correct answer is option C. 

Multiple choice biology plant growth growth rates and conditions for growth population ecology growth and development

What is wrong w.r.t annual rings ?

  1. These are also called growth ring

  2. One annual ring includes one circle of spring wood and one circle of autumn wood

  3. Annual rings are distinct in plants of tropical regions

  4. they give an estimate of the age of tree
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Annual rings are distinct and prominent in plants growing in temperate regions where climatic conditions vary sharply between seasons. In tropical regions, seasonal variations are not distinct, so annual rings are typically indistinct or absent.

Multiple choice biology classification of living beings hierarchy of classification different types of classifications introduction to classification of living organisms

The rose wood tree of India is

  1. Dalbergia sissoo

  2. Pinus roxburghii

  3. Tamarindus indica

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

Dalbergia sissoo or Rosewood tree is the native of the Indian subcontinent and southern Iran. It is an evergreen rosewood tree, also known as Sheesham, sisu, tahli, Tali. It is primarily found growing along river banks below 900 meters. The temperature in its native range averages 10–40 °C. It can withstand average annual rainfall up to 2,000 millimeters (79 in) and droughts of 3–4 months. Thus, the correct answer is option A.

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.