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

All the species of the genus Puccinia are obligate plant pathogens. Which among the following Puccinia species is an autoecious fungus?

  1. Puccinia asparagi

  2. Puccinia graminis

  3. Puccinia mariae-wilsoniae

  4. Puccinia poarum

  5. Puccinia striiformi
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Puccinia asparagi is the causative agent of asparagus rust. It is an autoecious fungus, meaning that all stages of its life cycle – pyciniospores, aeciospores and teliospores develop upon the same host plant.

Multiple choice

Which of the following types of fungi thrives inside the tree's vascular tissue and blocks its water supply, thus causing the death of the tree?

  1. Rust

  2. Anthracnose

  3. Pine pitch canker

  4. Mildew

  5. Armillaria root rot
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pine trees are susceptible to pine pitch canker. Pine pitch canker first kills the tips of branches, then spreads down the entire length of branches, and ultimately it can kill the whole tree. Infected trees die because the fungus thrives inside the tree's vascular tissue and blocks its water supply. The fungus is spread through beetles that attack pine cones.

Multiple choice

The age of a tree can be estimated by

  1. its height

  2. the girth of its trunk

  3. the number and size of its branches

  4. the number of concentric rings on a cross section of its trunk
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dendrochronology is the scientific method of dating tree rings to the year they were formed, which allows for the estimation of a tree's age.

Multiple choice

In a B+ tree,

  1. all keys are stored at the leaves

  2. all records are stored at the leaves

  3. all records are stored in the interior nodes

  4. both keys and records are stored in the interior nodes

  5. both keys and records are stored at the leaves
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

B+ tree is a type of tree which represents sorted data for efficient insertion, retrieval and removal of records. It stores all records at leaf level and all keys at interior nodes.

Multiple choice

Which of the following is an ecological value of forests?

  1. Forests provide us fuelwood for domestic and industrial uses.

  2. Forests supply raw materials for manufacture of paper, plywood, cardboards, etc.

  3. Forests provide food items in the form of roots, tubers, leaves, fruits, spices, etc.

  4. Forests help in increasing the soil fertility by promoting humus formation.

  5. Medicines like quinine and camphor and products like resins, turpentine, gum, and dyes are obtained from forest trees.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Increase in soil fertility by promoting humus formation is an ecological importance of forests.

Multiple choice

Which of the following statements is incorrect about trees?

  1. Trees are tall and strong.

  2. Trees are of different shapes and sizes.

  3. All the trees have a thick trunk.

  4. Trees are considered as annual plants.

  5. Most of the trees provide us wood for timber.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Trees live for a long time, they are called perennial plants.