Q: Myology is the study of

"Myo" refers to "Muscles". Myology is the study of the muscular system, including the study of the structure, function, and diseases of muscle.So, the correct answer is 'Muscles'

Question 1

How many heart does an earthworm possess?

Accepted Answer

Earthworm does not have a true heart as it is an invertebrate, but they have five pairs of aortic arches that are referred to as the heart.These arches are present in the anterior region of the body and they connect ventral and dorsal vessels and pump blood throughout the body. Thus, the correct option is B.

Question 2

Earthworm has

Accepted Answer

An earthworm is a burrowing animal, as it lives in underground burrows not exposed to light, it does not have eyes. They have touch-sensitive organs which are composed of photoreceptor cells. They have moist skin which helps in the exchange of gases. So, the correct answer is option C.

Question 3

How many segments are present in an earthworm?

Accepted Answer

An earthworm belongs to the phylum Annelida. Organisms in this phylum display bilateral symmetry, have a rudimentary head region (cephalization), and contain segmented bodies.The body of an earthworm is made up of approximately 100-120 segments. Each segment has muscles and bristles, known as setae, that help in the movement.Hence, option D is correct.

Question 4

Myology is the study of

Accepted Answer

&#34;Myo&#34; refers to &#34;Muscles&#34;. Myology is the study of the muscular system, including the study of the structure, function, and diseases of muscle.So, the correct answer is 'Muscles'

Question 5

Which of the following is the excretory organs of earthworm?

Accepted Answer

The earthworm is an invertebrate animal which belongs to the phylum Annelida. They are made up of many segments. Each segment of earthworm contains two nephridia. Each nephridia open into the body cavity of an earthworm. The nephridia is composed of two parts, namely, nephridiostome and nephridiopore.In earthworm, the urea, salts and water are excreted out through the nephridiopore of nephridia. Thus, the correct option is option C.

Question 6

Clitellum of Pheretima is thick girdle that is

Accepted Answer

Earthworm belongs to phylum Annelida which has segmented body. Clitellum of Pheretima is a thick Glandular region located in segments 14, 15 and 16. The glands help in cocoon formation during the breeding season. So, the correct answer is option B.

Question 7

Enteronephric nephridia of earthworm are concerned with

Accepted Answer

The integumentary nephridia open directly to the exterior and so they are called as the exonephric nephridia. As the septal and pharyngeal nephridia discharge their waste products into the alimentary canal, they are called as the enteronephric nephridia. So, the correct answer is option A.

Question 8

In earthworm, ovary is situated in ............ segment.

Accepted Answer

A pair of small white ovaries lie in the 13th segment on either side of the ventral nerve cord of the earthworm. Each ovary is whitish made of finger-like lobules in which ova are arranged in various stages of development. An oviductal funnel lies immediately behind each ovary in the 13th segment and it leads into a short oviduct. Both the oviducts converge and form a single female genital aperture at the 14th segment.So, the correct answer is option A.

Question 9

In earthworm, arrangement of blood vessels are

Accepted Answer

The blood vessels of earthworm are grouped into three types, as the longitudinal, the lateral and the intestinal plexuses. The nature and arrangement of the blood vessels in the first 13 segments are different from the segments behind 13. So, the correct answer is option B.

Question 10

In earthworm, the effective organ for food digestion is

Accepted Answer

Earthworm belongs to phylum Annelida which has a tubular body plan. It has a pear-shaped muscular pharynx that extends up to the fourth segment.The pharyngeal mass or bulb produces mucus and proteolytic enzymes, that are lodged into the salivary chamber before use and the ventral conducting chamber of the pharynx serves as the passage for the ingested food. The pharynx acts as a pump in feeding. When the mouth is pressed against the bits or humus or mud, then the pharynx undergoes a series of contractions resulting in the food sucking into the buccal chamber and then pumping the same backward into the esophagus. So, the correct answer is option A.

Structural Organization In Animals

Biology
569 Views

How many heart does an earthworm possess?

Earthworm has

How many segments are present in an earthworm?

Myology is the study of

Which of the following is the excretory organs of earthworm?

Clitellum of Pheretima is thick girdle that is

Enteronephric nephridia of earthworm are concerned with

In earthworm, ovary is situated in ............ segment.

In earthworm, arrangement of blood vessels are

In earthworm, the effective organ for food digestion is

Structural Organization In Animals

Biology 569 Views

How many heart does an earthworm possess?

Earthworm has

How many segments are present in an earthworm?

Myology is the study of

Which of the following is the excretory organs of earthworm?

Clitellum of Pheretima is thick girdle that is

Enteronephric nephridia of earthworm are concerned with

In earthworm, ovary is situated in ............ segment.

In earthworm, arrangement of blood vessels are

In earthworm, the effective organ for food digestion is

Biology
569 Views