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ISA Arborist Test 01: Tree Care & Climbing

Q: In which of the following scenarios would double-crotching be useful?

Double-crotching uses two attachment points. This gives the climber more balance. It is helpful when moving through a wide canopy.

Q: Which device helps stop a cable from wearing out where it connects to hardware?

A thimble is a metal loop. It sits inside the eye of a cable. It stops the metal from rubbing and wearing thin.

Q: What is a bad result of lion tailing according to ANSI A300 standards?

Lion tailing removes too many inner branches. This moves all the weight to the ends. Wind then whips the branches harder.

Q: A branch is tip-tied with the rope held at the trunk. Which part usually falls away from the cut?

Tip-tying holds the outer end of the branch. The heavy butt end falls down while the tip stays held by the rope.

ISA Test 01: Key Themes

This exam focuses on Safety Gear, Pruning Cuts, and Climbing Techniques.

Danger: Never perform a flush cut. Removing the branch collar causes permanent damage to the trunk.

Facts: Mycorrhizae are beneficial fungi. They increase the root surface area to help trees find more water.

Tech Note: Always check your bend ratio on pulleys. Using a rope that is too thick for the pulley will weaken the fibers.

Edited by: Test-Questions.com

Last Updated: April 26, 2026

Q:1In which of the following scenarios would double-crotching be useful?

When securing a guy wire to a slumping tree

When ascending a second leader in a tree with an extremely broad spread

When sending equipment to a climber

When descending to the ground during an emergency situation

Q:2Which device helps stop a cable from wearing out where it connects to hardware?

Lag hook

Cable aid

Ship auger

Thimble

Q:3What is a bad result of lion tailing according to ANSI A300 standards?

Higher risk of branch failure because weight moves to the tips

Better wound healing

Fewer water sprouts

A stronger branch protection zone

Q:4A branch is tip-tied with the rope held at the trunk. Which part usually falls away from the cut?

Butt end

Tip end

Middle

It is impossible to predict

Q:5Mycorrhizae are helpful relationships between tree roots and what?

Mulch

Fungi

Insects

Grasses

Q:6Which practice breaks ANSI A300 rules by cutting limbs to stubs?

Topping

Thinning

Reduction pruning

Pollarding

Q:7Which tool is best for connections that you rarely need to open?

Carabiners

Clevises

Shackles

Screw links

Q:8What is NOT part of gymnosperm wood?

Parenchyma cells

Tracheids

Fibers

Sieve tube elements

Q:9A pulley is 3 inches wide and the rope is 1 inch wide. What is the bend ratio?

2:1

1:1

1:3

3:1

Q:10In the name Castanea dentata, what does Castanea mean?

Class

Specific epithet

Family

Genus

Q:11What should you do when planting a tree in heavy clay soil?

Mix the soil with 50% peat

Dig the hole 8 inches deeper than the root ball

Plant the tree extra deep

Plant the tree slightly shallow

Q:12How does a Douglas-fir differ from a Balsam fir?

They are in different families

Balsam fir is not a conifer

They are in different genera

Douglas-fir is a type of hemlock

Q:13Where should you make the final cut when removing a live branch?

Outside the branch bark ridge and the branch collar

Flush with the trunk

Six inches away from the trunk

At a steep angle toward the trunk

Q:14How can you add extra support when cabling a tree with many stems?

Put cables very low in the tree

Use all of these answers

Put two cables on one lag

Connect the limbs in triangles

Q:15Which knot makes two adjustable loops for an emergency harness?

Bowline on a bight

Figure-eight follow-through

Clove hitch

Running bowline

Q:16Why do cicadas cause twigs to die?

The larvae eat the roots

The adults eat all the leaves

The females lay eggs in the twigs

They cause galls to grow

Q:17During a rescue, what is the first priority once you reach the victim?

Check the victim's airway and breathing

Start the descent immediately

Start chest compressions

Clean any small cuts

Q:18What does drop crotch pruning mean?

A way to lower heavy wood

Reducing the size of a tree

Making a bad, messy cut

Using one branch for two ropes

Q:19What usually stops a tree from taking in fertilizer right away?

Not enough light

High soil pH

No mulch

Dry soil

Q:20What is a false crotch?

A weak branch connection

A spot with included bark

A pulley or block used for rigging

Where two stems of equal size meet

Test 01 Study Summary

1. Proper Rigging A thimble is vital for cable life. It prevents the metal from wearing down at the connection point.

2. Tree Health Topping is a banned practice. It creates weak stubs that rot quickly and lead to branch failure.

3. Soil Management In heavy clay, plant trees slightly shallow. This ensures the roots get enough oxygen to survive.

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