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 movement in plants living world of plants - plant physiology biology

If a tree, flowers thrice in a year (October, January and July) in Northern India, it is said to be

  1. Photosensitive but thermo-insensitive

  2. Thermosensitive but photo-insensitive

  3. Photo and thermo-insensitive

  4. Photo and thermosensitive
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the case mentioned here, the plant is able to undergo flowering during all seasons of the year. it shows that the plant is insensitive to light. Photoperiodism has no great effect on the plant.

Multiple choice botany plant tissues permanent tissues and their types simple permanent tissues tissues: plant tissues

It is difficult to pull out the husk of a coconut tree due to _____________.

  1. Presence of parenchyma.

  2. Presence of sclerenchyma.

  3. Presence of collenchyma.

  4. Presence of aerenchyma.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Parenchyma cells are thin-walled, flexible and loosely packed cells. They are often alive at maturity. Their shape changes as per function. They are filler tissue in soft parts of a plant. 
Collenchyma cells are thin-walled with some areas of secondary thickening. They provide extra structural support and flexibility to plant. Coconut husk is not made of collenchymatous cells. 
In many aquatic plants, parenchyma cells have large air cavities to give buoyancy to the plant and enable them to float in water. Such parenchyma cells are called as aerenchyma.
Sclerenchyma is dead, long, thin narrow cells. Walls of sclerenchyma cells are lignified, which make them thick. This tissue makes the plant hard and stiff. Coconut husk is very hard and is made of such thickened, lignified cells. Such cells make it very hard to pull out the coconut husk.

Multiple choice botany taxonomy and systematic botany taxonomy and systematics systematics of living world kingdom plantae plant taxonomy classification of biodiversity

Arisotle classify plants into

  1. Trees

  2. Shrubs

  3. Trees, shrubs and herbs

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Classification is the arrangement of living organisms into groups on the basis of similarities and dissimilarities between them and placing within taxonomic hierarchy such as kingdom, genus, species etc. Aristotle was the first to give a scientific basis for classification. He classified living organisms into two groups; plants and animals.
He divided plants into trees, shrubs and herbs on the basis of simple morphological characters.
So, the correct answer is 'Trees, shrubs and herbs'.
Multiple choice geography secondary sector : industry generation of electricity exploration and conservation of minerals irrigation and power

Forests can be conserved if _______________.

  1. Trees are cut down worldwide

  2. Trees are cut down selectively

  3. Rate of plantation does not exceed rate of cutting trees

  4. New seedlings are not planted and grown trees are cut
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In selective cutting only mature trees are selected for cutting. This process is to be followed in rotation. Shelter wood cutting is where first of all useless trees having been cut down followed by medium and best quality timber trees.

Multiple choice commercial studies striving for a better environment unequal distribution of resources protecting our environment rules are for everyone

Which of the following is not a natural resource?

  1. Mango tree

  2. Snake

  3. Wind

  4. Wooden house
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Natural resources are the resources made available by the nature to us. The important natural resources are the trees, animals and climatic factors like wind. All of these can be used variously to generate goods and services for our benefit. For example- trees provide us fruits, fresh air, timber etc. All animals and plants are important for the ecological balance on the Earth. Further some animals are of direct economic benefit for mankind. Climatic factors like sunlight and wind power can be harnessed to generate energy.

Multiple choice evs - i the environment and us pollution of soil degradation of land damaging the forests

Plantation of sapling on a large scale is celebrated as

  1. Forestation day

  2. Vanamahotsava

  3. Deforestation day

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

Van Mahotsav is celebrated for 1 week every year where millions of people plant trees in order to restore the forests and plantation that has been constantly destroyed. 

In 2019, it was celebrated from 1st to 7th July.
So, option B is the correct answer.

Multiple choice zoology evolution of life darwin's theory of evolution process of evolution lamarckism

Lamarck noted that the leaves of beech tree present on the sunny side had two layers of palisade cells, whereas leaves that were present in the shade had only one layer. He attributed this to

  1. Environment reactions

  2. Change of habits

  3. Use and disuse

  4. Inheritance of acquired character
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lamarck's theory of evolution is primarily based on the principle of use and disuse of organs, which he believed led to structural changes that were then inherited.

Multiple choice social studies wild life wildlife and their conservation wildlife resources wildlife conservation approaches and projects

Into how many categories forests are classified according to their density?

  1. 2

  2. 3

  3. 4

  4. 5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Forest density classification

  • Very Dense Forest All lands with tree canopy density of 70% and above.
  • Moderately Dense Forest All lands with tree canopy density of 40% and more but less than 70%.
  • Open Forest All lands with tree canopy density of 10% and more but less than 40%.
Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Gymnosperms do not include _____________.

  1. herbs

  2. shrubs

  3. trees

  4. both (a) and (b)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Living gymnosperms are predominantly middle sized trees (Cycas) to tall trees (Pinus) and shrubs (Ephedra). Rarely they are woody climbers (Gnetum montanum). There are no herbs in gymnosperms.

So the correct option is A.