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

The tallest tree is

  1. Pinus

  2. Acanthocephalus

  3. Sequoia

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

Eucalyptus regnans (Australian mountain ash) is the tallest flowering tree species in the world, reaching heights over 100 meters. Sequoia (redwood) is also extremely tall but generally slightly shorter than the tallest Eucalyptus specimens. Pinus refers to pine trees, and Acanthocephalus is actually a parasitic worm genus, not a tree.

Multiple choice

A person who has to plant trees in the forest, must have the knowledge of

  1. sericulture

  2. silviculture

  3. apiculture

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

Silviculture is the science and practice of controlling forest establishment, composition, and growth. Sericulture is silk production, apiculture is beekeeping, and pisciculture is fish farming - none directly relate to planting trees.

Multiple choice

Lead tree is known as

  1. (CH3COO)2Zn

  2. Pb3O4

  3. PbCO3

  4. PbO2

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This option is correct because lead is readily obtained in a crystalline state by the process of precipitation. If the Zn rod to be suspended in weak solution of lead acetate the metallic lead is thrown in a mass of arboraceous crystal known as the lead tree, it is zinc acetate.

Multiple choice

The age of a tree in years can be ascertained by

  1. its weight

  2. its height

  3. the number of its annular rings

  4. the length of its roots
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Trees grow one annular ring per year in temperate climates. Counting these rings in a cross section of the trunk is the standard method for determining tree age.

Multiple choice

Which among the following statements does not characterise conifers?

  1. All living conifers have monopodial growth with strong apical dominance.

  2. All extant conifers are woody plants.

  3. The wood of conifers is known as softwood.

  4. The conifers are of immense ecological importance.

  5. Boreal conifers have many summer time adaptations.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Boreal conifers have many wintertime adaptations. The narrow conical shape of northern conifers, and their downward-drooping limbs, help them shed snow. Many of them seasonally alter their biochemistry to make them more resistant to freezing.

Multiple choice

Directions: Fill I, II, III and IV with P, Q, R and S to make it a meaningful passage.

Banyan is the national tree of India. It is a very big tree with very extensive branches. It is an evergreen tree. It has very wide branches (I) send the trunk like roots in to the ground in order to provide it support. It has a very long life and it (II) height of 21 meters. The leaves of Banyan tree are broad, oval and glossy with a length of 10-20 cm. This tree is found in (III) the country. It can grow in any type of soil. It has many medicinal properties. Its leaves and seeds are (IV), diabetes and many other diseases.

P : almost all parts of Q : which spread out and R : used to cure diarrhea S : grows up to the

  1. SRQP

  2. PRSQ

  3. QSPR

  4. RQSP

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Option 3 is the correct answer as it makes sense here.

Multiple choice

The hardwood of angiosperms and the softwood of conifers differ from each other by _______________________.

  1. xylem parenchyma

  2. vascular cambium

  3. tracheids

  4. vessel element

  5. xylem fibres
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A vessel element is one of the cell types found in xylem. Vessel elements are typically found in flowering plants (angiosperms) but absent from most gymnosperms, such as conifers. Vessel elements are the main feature distinguishing the hardwood of angiosperms from the softwood of conifers.

Multiple choice

Immovable property does not include timber. This statement is

  1. true

  2. false

  3. true till it is rooted in the earth

  4. true as it is severed from the earth

  5. Branches of timber are not included in immovable property.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Option (1) is correct: As per Section 3 of Transfer of Property Act, 1882, immovable property doesn’t include standing timber, growing crops or grass.

Option (2) is incorrect: Immovable property doesn’t include standing timber.

Option (3) is incorrect: Immovable property doesn’t include standing timber at all. Option (4) is incorrect: Immovable property doesn’t include standing timber.
Multiple choice

Alburnum is also called

  1. autumn wood

  2. heart wood

  3. sap wood

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

Alburnum or sap wood is the outer, lighter-colored wood in tree trunks that conducts water and minerals. It contains living cells and is physiologically active. Heart wood is the inner, non-living part; autumn wood and spring wood refer to growth rings formed in different seasons.