Spider Mites: Life Cycle and Impact

Spider mites are pests that affect crops worldwide due to their high reproductive capacity. They can be various colors and are known for their two large black spots. Spider mites damage plants by feeding on tissue and sap, primarily on the underside of leaves, leading to yellowing and plant death. They reproduce both sexually and asexually, with eggs laid on leaves. The larvae are initially colorless but change color as they feed. Spider mites undergo several molts, shedding their skin each time. The color of adult mites often depends on the host crop. Overuse of chemicals has led to resistance in many spider mite populations. For more information, visit our YouTube channel and website.

What characteristic feature gives the two-spotted spider mite its name?

• Its two large black spots

• Its ability to jump

• Its red color

• Its web-spinning ability

Where do spider mites primarily feed on plants?

• On the flowers

• On the stems

• On the underside of leaves

• On the roots

What happens to plant leaves as spider mite damage increases?

• They turn blue

• They become transparent

• They turn yellow

• They grow larger

How do spider mites reproduce?

• By budding

• Both sexually and asexually

• Only sexually

• Only asexually

What color are spider mite larvae when they first emerge?

• Bright red

• Dark green

• Yellow

• Virtually colorless

What is the process called when spider mites shed their skin?

• Metamorphosis

• Molting

• Shedding

• Regeneration

What factor influences the color of adult spider mites?

• The amount of sunlight

• The crop they inhabit

• The temperature

• The time of day

What has led to spider mites developing resistance to pesticides?

• Natural selection

• Climate change

• Intensive use of chemicals

• Lack of predators

Where can you find more information about agricultural pests?

• In a library

• On a YouTube channel and website

• In a newspaper

• In a gardening magazine