Agriculture Exams (Agri Croppro) - Free Online Reviewers

#201. Color band of highly toxic pesticides

A blue

B yellow

C green

D red

Answer: red

#202. The only plant pathogen belonging to animal kingdom aphids

A nematodes

B mole

C crickets

D earthworms

Answer: earthworms

#203. This nematode is known as the root knot nematode and is considered as the most destructive to worldwide agriculture.

A Tríchodorus

B Meloidogyne

C Xiphinema

D Radopholus

Answer: Meloidogyne

#204. This nematode is known as the burrowing nematode and is a major parasite of bananas and plantains causing the "toppling disease"

A Meloidogyne incognita

B Xiphinema index

C Trichodorus primitivus

D Radopholus similis

Answer: Radopholus similis

#205. Some nematodes are able to transmit plant viruses. What role do these nematodes play in disease development?

A Incitants

B Vectors

C Pathogens

D Parasites

Answer: Parasites

#206. Some nematodes alter host physiology, rendering a resistant crop susceptible to invasion of fungal or bacterial pathogens. What role do these nematodes play in disease development?

A Incitants

B Pathogens

C Parasites

D Vectors

Answer: Incitants

#207. For annual crops, the maximum number of nematode parasites can be recovered during

A Fallow period

B Flowering stage

C Near harvest stage

D Vegetative stage

Answer: Near harvest stage

#208. This is the outer non-cellular layer covering the nematode body and is shed-off during molting.

A exoskeleton

B endoskeleton

C cuticle

D skin

Answer: cuticle

#209. This/these feeding structure/s distinguish/es plant parasitic from non-plant parasitic nematodes.

A stylet

B denticles

C mural tooth

D all of the above

Answer: stylet

#210. For root knot and cyst nematodes, this is also known as the infective stage

A adult female

B 1st stage juvenile

C 2nd stage juvenile

D 4th stage juvenile

Answer: 2nd stage juvenile

#211. Where are the eggs of root-knot nematode deposited?

A outside the root

B inside body of females

C in a gelatinous matrix

D migration path

Answer: in a gelatinous matrix

#212. What is the typical life cycle of Meloidogyne incognita?

A migratory endoparasite

B migratory ectoparasite

C sedentary ectoparasite

D sedentary endoparasite

Answer: sedentary endoparasite

#213. Which of the following root symptoms should raise suspicion of a nematode problem?

A leaf spot

B chlorosis

C galls or swelling

D wilting

Answer: galls or swelling

#214. Which of the following is not typical of nematode injury to plants?

A mechanical damage to cells

B death of plants

C virus transmission

D death of cells

Answer: death of plants

#215. Plant parasitic nematodes are diagnosed by examining

A soil and roots

B fruits

C stems

D leaves

Answer: soil and roots

#216. The typical number of juvenile stages in the life cycle of a nematode is

A 4

B 3

C 5

D 16

Answer: 4

#217. Nematodes which produce eggs that hatch after being laid are called

A oviparous

B ovoviviparous

C parthenogenetic

D hermaphroditic

Answer: oviparous

#218. Nematode species which require the presence of both females and males for reproduction to occur are called

A amphimictic

B hermaphroditic

C parthenogenetic

D ovoviviparous

Answer: amphimictic

#219. Process of reproducing from eggs without fertilization by sperm cells is called

A hermaphroditic

B oviparous

C amphimictic

D parthenogenetic

Answer: parthenogenetic

#220. Possessing both functional male and female reproductive organs is

A amphimictic

B hermaphroditic

C parthenogenetic

D none of the above

Answer: hermaphroditic

Agriculture Exams (Agri Croppro) – Page 11

#201. Color band of highly toxic pesticides

#202. The only plant pathogen belonging to animal kingdom aphids

#203. This nematode is known as the root knot nematode and is considered as the most destructive to worldwide agriculture.

#204. This nematode is known as the burrowing nematode and is a major parasite of bananas and plantains causing the "toppling disease"

#205. Some nematodes are able to transmit plant viruses. What role do these nematodes play in disease development?

#206. Some nematodes alter host physiology, rendering a resistant crop susceptible to invasion of fungal or bacterial pathogens. What role do these nematodes play in disease development?

#207. For annual crops, the maximum number of nematode parasites can be recovered during

#208. This is the outer non-cellular layer covering the nematode body and is shed-off during molting.

#209. This/these feeding structure/s distinguish/es plant parasitic from non-plant parasitic nematodes.

#210. For root knot and cyst nematodes, this is also known as the infective stage

#211. Where are the eggs of root-knot nematode deposited?

#212. What is the typical life cycle of Meloidogyne incognita?

#213. Which of the following root symptoms should raise suspicion of a nematode problem?

#214. Which of the following is not typical of nematode injury to plants?

#215. Plant parasitic nematodes are diagnosed by examining

#216. The typical number of juvenile stages in the life cycle of a nematode is

#217. Nematodes which produce eggs that hatch after being laid are called

#218. Nematode species which require the presence of both females and males for reproduction to occur are called

#219. Process of reproducing from eggs without fertilization by sperm cells is called

#220. Possessing both functional male and female reproductive organs is