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 biology protectors of biosphere structure of chloroplast plastids photosynthetic pigments

If a tree flowers thrice in a year, in the months of October, January and July in northern India the plant is

  1. Photo and thermo-sensitive.

  2. Photo and thermo-insensitive.

  3. Photosensitive but thermo-insensitive.

  4. Thermo-sensitive but photo-insensitive.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants are able to detect and respond to light, gravity, changes in temperature and chemicals. Plants respond to the changing seasons to initiate their development and flowering. The photoperiodic stimulus is found to be responsible for flowering, light quality, vernalization, autonomous and GA pathways are also responsible for regulating the flowering time in plants. While vernalization and photoperiodic pathways are environmental dependents, the autonomous pathway promotes flowering in all conditions. Hence for a tree that flowers thrice a year, the plant has to be both photo and thermo-insensitive.

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

Slow rate of decomposition of fallen logs in nature is due to

  1. Anaerobic environment around them

  2. Low cellulose contents

  3. Low moisture content

  4. Poor nitrogen content
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The slow rate of decomposition of fallen logs in nature is due to their low moisture content The cellulose is in high amount in fallen logs. 

Decomposers break down dead plants and animals. They also break down the waste (poop) of other organisms. Decomposers are very important for any ecosystem. Low moisture content will lead to a decrease in the number of decomposers because decomposers require an optimum moisture for their proper growth and functioning.
So the answer is 'Low moisture content'. 

Multiple choice zoology ecosystems decomposition in ecosystem ecosystem productivity and decomposition producers, consumers and decomposers

The slow rate of decomposition of fallen logs is due to

  1. poor nitrogen content

  2. anaerobic environment

  3. low cellulose contents

  4. low moisture contents
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Low or reduced moisture alters and reduces the decomposition process. A slow rate of composition of fallen logs is likely due to low moisture contents.

So, the correct answer is option D, low moisture contents.

Multiple choice zoology why classification? nomenclature in classification introduction to plant kingdom history of classification nomenclature of animals

Bionomial nomenclature was first issued in:

  1. SystemaNaturae

  2. Genera Plantarum

  3. Genera Animahum

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

Carolus Linnaeus introduced the binomial nomenclature system in his seminal work, Systema Naturae, which laid the foundation for modern biological classification.

Multiple choice evs forests and life conservation of forest and wildlife wildlife forest - the dwelling place of animals forest and its importance deforestation and conservation

The branch of science that deals with the development of
forest and utilization of forest product is

  1. Horticulture

  2. Sericulture

  3. Silviculture

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

Silviculture is the process of controlling the growth, composition, health, and quality of the forests to satisfy people's diverse needs and values.

So the correct option is C

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Afforestation should be with

  1. Exotic species

  2. Indigenous species

  3. Bamboos

  4. Eucalyptus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Afforestation is the process of planting trees, or sowing seeds, in a barren land devoid of any trees to create a forest. The term should not be confused with reforestation, which is the process of specifically planting native trees into a forest that has decreasing numbers of trees.
  • Indigenous species refers to species originating or occurring naturally in a particular place(native).
  • Hence Afforestation should be with Indigenous species because they are easily available and have a high growth rate.
  • So, the correct answer is  'Indigenous species'.
Multiple choice evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Afforestation should be with

  1. Exotic species

  2. Indigenous species

  3. Bamboos

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

Reforestation means replanting of forest trees in areas, which were once having dense forests but the forests were later on destroyed by cutting of trees in large numbers. Afforestation is different from reforestation. Afforestation is planting of trees in new areas, which were not previously under forest cover. Typically, waste lands or land other wise not previously having forest cover is selected. Indigenous species are more suited for this purpose because they are well adapted to local climatic and soil conditions. These species are already acclimatized to local conditions.

Multiple choice botany internal structure of root, stem and leaf internal structure of dicot stem internal structure of stem(dicot and monocot) anatomy of stem

Knots are formed in the wood due to

  1. External injuries

  2. Bases of the branches get buried in main stem

  3. leaf scars

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

Knots are common blemishes in trees, often causing lumps or holes within the trunk of the tree itself. In most cases knots are caused by the natural growth of the tree, though the specific circumstances under which they form determines how they will appear. As a tree grows and increases the circumference of its trunk, the growing trunk begins to overtake the branches that grow out from it. Knots form around these branches, building up trunk material as the tree continues to expand. Since, the branches are still growing as they are overtaken by the trunk, the knot that forms is solid and contains living wood throughout. The wood of the knot is typically tougher than the surrounding wood and may form a bulge around the branch emerging from its center. So, knots are formed in wood due to bases of the branches get buried in main stem and not because leaf scars, insect bites and injuries. 
Therefore, the correct answer is option B.

Multiple choice botany internal structure of root, stem and leaf internal structure of dicot stem internal structure of stem(dicot and monocot) anatomy of stem

Annual rings can be useful for indicating age of the tree

  1. Dicot of equatorial region

  2. Monocot of equatorial region

  3. Dicot of temperate region

  4. Monocot of temperate area
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In dicotyledonous trees, growing in temperate regions, due to maximum seasonal variations two types of secondary xylems are formed, spring or early wood and autumn wood or latewood. These two kinds of wood together form into a ring of wood called annual rings. These annual rings are useful in indicating the age of the trees.

So, the correct option is ‘Dicot of temperate regions’.

Multiple choice botany taxonomy and systematic botany importance and classification of angiosperms plant adaptation adaptation in plants uses of angiosperms classification of angiosperms

One of the following is a social foresting species with multiple utility 

  1. Mangifera indica (Mango)

  2. Leucaena leucocephala (Subabul)

  3. Borassus flabelliformis (Palmyrah palm)

  4. Rosa grandiflora (Rose)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Leucaena leucocephala (Subabul) is a social foresting species with multiple utility like green manure, biomass production, food for humans, pulpwood for paper industry.

Multiple choice geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

Planting of trees on a large scale to check soil erosion is known as __________.

  1. Afforestation

  2. Reforestation

  3. Green belt

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

Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation. Reforestation activities promote the gradual depletion of CO2 from the atmosphere through absorption during photosynthesis.

Multiple choice geography africa - location, political divisions and physical features cocoa cultivation in ghana study of africa africa

What kind of tree is cocoa?

  1. Coniferous tree

  2. Tropical tree

  3. Equatorial tree

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

Theobroma cacao, also called the cacao tree and the cocoa tree, is a small (4–8 m (13–26 ft) tall) evergreen tree in the family Malvaceae, native to the deep tropical regions of the Americas. Its seeds, cocoa beans, are used to make chocolate liquor, cocoa solids, cocoa butter and chocolate.

Cocoa is a Tropical tree.

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

Extensive plating of trees to increase forest cover is called :

  1. Afforestation

  2. Agroforestry

  3. Deforestation

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

Afforestation is the process of planting trees in an area that did not previously have forest cover or has been cleared for a long time. It is a key strategy for increasing forest cover.

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

The cutting down of trees and setting them on fire and raising crops on the resulting ash is called:

  1. Pyrolysis

  2. Jhum

  3. Taungya system

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

Jhum is the traditional name for slash-and-burn agriculture practiced in Northeast India, where trees are cut, burned, and crops are grown using the nutrient-rich ash.

Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Energy plantation is

  1. Growing starch/ sugar rich plants

  2. Growing latex rich plants

  3. Growing fuel wood trees

  4. Growing fruit plants
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Energy plantation is growing species of trees and shrubs which can be harvested in a short period of time and can be used for fuel. Plant material can be used as solid fuel by burning wood or they can be converted into other forms like methane by biological activities like decomposition. Also, fuel wood is renewable source of energy and doesn't release harmful pollutants in the atmosphere.
So, the correct answer is 'Growing fuel wood trees'.