General Agriculture MCQ For Competitive exam-56

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General Agriculture MCQ

#Which part of the exoskeleton lies between the wax layer and the cement layer?

a. Exocuticle

b. Cuticulin layer

c. Endocuticle

d. None of these

#Which suture is not found on the head capsule?

a. Pleural suture

b. Subgenal suture

c. Epistomal suture

d. Frontal suture

#Which statement about valvulae is incorrect?

a. They are part of the female genitalia.

b. They lie just inside the valvifers.

c. They are arranged in three pairs.

d. They guide the egg during oviposition.

#The cibarium is best described as:

a. Thoracic muscles that move the wings.

b. A structure on the pretarsus.

c. The innermost layer of the epicuticle.

d. A muscular pump that sucks food into the mouth.

#Elastic regions of the exoskeleton:

a. Are generally known as sclerites.

b. Are found only at the joints.

c. Lack a well-defined exocuticle.

d. Contain high concentrations of quinones.

(General Agriculture MCQ)

#Which layer(s) of the exoskeleton is(are) secreted by the epidermis?

a. Endocuticle

b. Epicuticle

c. Exocuticle

d. All of these

#Which structure is not part of the central nervous system?

a. Frontal ganglion

b. Circumesophageal commissure

c. Tritocerebrum

d. Subesophageal ganglion

#An insect must use both of its compound eyes (simultaneously) in order to perceive:

a. Distance or depth

b. Ultraviolet light

c. Shape or size

d. Polarized light

#The chemical trail produced by foraging ants would be classified as a(n):

a. Kairomone

b. Allomone

c. Pheromone

d. None of these

#Which statement about the insect’s nervous system is incorrect?

a. The ventral nerve cord controls the heart and gut.

b. The caudal ganglion controls the external genitalia.

c. The brain controls the eyes and antennae.

d. The subesophageal ganglion controls the mouthparts.

(General Agriculture MCQ)

#The deutocerebrum innervates the:

a. Mouthparts

b. Antennae

c. Compound eyes

d. Heart

#An ommatidium is best defined as a:

a. Subdivision of the ventral nerve cord.

b. Functional unit of the compound eye.

c. Mechanoreceptor used for proprioception.

d. Ventral lobe of the insect’s brain.

#Fly larvae (maggots) move away from a bright source of light. This is an example of a

a. Taxis

b. Reflex

c. Kinesis

d. Transverse orientation

#A male empiid fly courts a female for 20 minutes and then gives up after he fails to elicit any response. This is an example of:

a. Conditioning

b. Imprinting

c. Habituation

d. Instrumental learning

#The circumesophageal connective joins the:

a. Deutocerebrum with the tritocerebrum.

b. Tritocerebrum with the subesophageal ganglion.

c. Two lobes of the tritocerebrum.

d. Frontal ganglion with the hypocerebral ganglion.

(General Agriculture MCQ)

#Compared to most learned behaviors, instinctive (innate) behavior is:

a. More stereotyped

b. Less complex

c. Not subject to evolutionary change

d. All of these

# When laying eggs, a female insect returns to her larval host plant, even though she has not fed upon this plant during her adult life. This is an example of:

a. Conditioning

b. Habituation

c. Imprinting

d. Instrumental learning

#In most insects, the sense of smell is localized in the:

a. Tarsi

b. Antennae

c. Maxillary palps

d. Frons

#In insects with dichromatic (2 pigment) color vision, maximum color discrimination is in the range from:

a. Red to green

b. UV to green

c. Yellow to blue

d. Bee violet to bee purple

#The mandibular gland substance of the queen honey bee inhibits ovarian development among worker bees in the same hive. This is an example of a(n):

a. Allomone

b. Synomone

c. Pheromone

d. Kairomone

(General Agriculture MCQ)

#If a nerve impulse started in the tritocerebrum and passed through the stomodeal nervous system until it reached the heart, it would not pass through the:

a. Recurrent nerve

b. Subesophageal ganglion

c. Frontal nerve

d. Hypocerebral ganglion

#An insect’s mechanoreceptors would NOT be sensitive to:

a. Body movement

b. Sound vibrations

c. Wind speed

d. Water vapor

#Stridulation is a method of producing sound by:

a. Vibrating the wings.

b. Vibrating a resonant membrane.

c. Striking the substrate.

d. Rubbing body parts together.

#In an ant nest, all workers are:

a. Adult males

b. Immature males

c. Adult females

d. Immature females

#Which pair of structures have the most similar sensory functions?

a. Chordotonal organs and tympana

b. Stemmata and pressure receptors

c. Flex receptors and cerci

d. Antennae and hair beds

(General Agriculture MCQ)

#A firefly would most likely be classified as a ____ insect.

a. Crepusular

b. Eusocial

c. Diurnal

d. Solitary

#Female pseudergates may molt into determinant nymphs whenever:

a. Soldier pheromone is too high

b. Queen substance is too high

c. King substance is too high

d. None of these

#All insects must communicate in order to:

a. Find a mate

b. Survive the winter

c. Locate food

d. Avoid predation

# Any chemical used to repel predators would always be classified as a(n):

a. Pheromone

b. Hormone

c. Kairomone

d. Allomone

#Insects that share a common nest site but do not care for their young are said to be

a. Quasisocial

b. Semisocial

c. Communal

d. Solitary

(General Agriculture MCQ)

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