Tag: more about organ system

Questions Related to more about organ system

Well developed digestive system is present in

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. Cnidarians, prawns and earthworms

  2. Grasshoppers, frogs and houseflies

  3. Amoeba, Hydra and dog

  4. Sponges, flatworms and earthworms

Show answer
Correct Option: B
Explanation:

Porifera (sponges), Platyhelminthes (flatworms) and Cnidaria (Hydra) do not have a well-developed digestive system. They have 'blind-sac' body plan, with an opening that serves as both the mouth and the anus, and a gastrovascular cavity where digestion takes place.

Earthworms and Arthropods (Grasshoppers, houseflies) have a well-developed digestive system, having a compartmentalized alimentary canal and two-openings, anterior as mouth and posterior as the anus. 
The vertebrates (frogs) also have a well developed digestive system.
Hence, the correct answer is 'Grasshoppers, frogs and houseflies'

When compared to the mammals, birds are less sensitive to temporary deprivation of water, because

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. Urea excretion in mammals entails a greater loss of water than that in birds

  2. Absorption of Water horn the gut is more efficient in birds that in mammals

  3. The water requirement per unit weight is less in birds than in mammal

  4. None of these.

Show answer
Correct Option: A
Explanation:

Birds and reptiles have uric acid as their nitrogenous waste. 

The uricotelic organism excretes uric acid in form of a white paste or powder.
this uric acid is advantaged over the urea which is excreted in mammals in certain ways because it is less toxic and reduces water loss and thus it also reduces the need for water for excretion.

So, the correct option is 'Urea excretion in mammals entails a greater lass of water than that M birds'

Select the correct option:

Match column I with column II and select the correct option from the codes given below:

Column I(Parts of alimentarycanal of earthworm) Column II(Respective segments)
(A) Buccal cavity (i) 1-3
(B) Pharynx (ii) 3-4
(C) Oesophagus (iii) 5-7
(D) Gizzard (iv) 8-9
(E) Stomach (v) 9-14
(F) Intestine (vi) 15 to last
(G) Typhlosole (vii) 26-35

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. A- (i); B- (ii); C- (iii); D- (iv); E- (v); F- (vi); G- (vii)

  2. A- (i); B- (ii); C- (iii); D- (v); E- (iv); F- (vi); G- (vii)

  3. A- (i); B- (iii); C- (ii); D- (iv); E- (v); F- (vii); G- (vi)

  4. A- (i); B- (iii); C- (ii); D- (v); E- (iv); F- (vii); G- (vi)

Show answer
Correct Option: A
Explanation:

(A) Buccal cavity: 1-3

(B) Pharynx: 3-4
(C) Oesophagus: 5-7
(D) Gizzard: 8-9
(E) Stomach: 9-14
(F) Intestine: 15 to last
(G) Typhlosole: 26-35
So, the correct answer is 'A- (i); B- (ii); C- (iii); D- (iv); E- (v); F- (vi); G- (vii)'.

Which of the following is NOT a physical process of digestion?

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. Deglutition

  2. Churning

  3. Peristalsis

  4. Emulsification

Show answer
Correct Option: D
Explanation:

(A) Deglutition is the process of swallowing the masticated food.

(B) Churning is the process in which the stomach mixes its digestive enzyme with food.
(C) Peristalsis is a wave-like muscle contraction that helps in the food movement in different digestive organs like oesophagus. 
(D) Emulsification is the process of mixing of bile with fat to change it into micelles.
So, the correct option is 'Emulsification'.

The amino acid _____ is obtained by microbial process by lactobacillus delbrueckii.

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. itaconic acid

  2. lactic acid

  3. gluconic acid

  4. citric acid

Show answer
Correct Option: B
Explanation:

Lactobacillus delbrueckii is a beneficial bacteria found in the digestive tract. The proper balance of gut flora helps to keep your intestinal walls strong and bad bacteria at bay and can reduce the risk of chronic disease. which are highly adapted to growing on lactose and converting it into lactic acid.

So the correct answer is "Lactic acid".

Select in incorrect statement :
a) alimentary canal begins with an anterior cavity called buccal cavity.
b) tooth is embedded in a socket of mandible bone only 
c) human shows strict diphyodont type of dentition .
d) oesophagus and the trachea open into the phatynx 

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. a, b , c & d

  2. a, b & c

  3. a, c & d

  4. a, b & d

Show answer
Correct Option: A
Explanation:

Alimentary canal is also called as digestive tract. It starts in the mouth followed by buccal cavity and ends at the anus. The digestion starts in the anterior cavity called buccal cavity. Teeth are embedded in a socket of mandible (lower jaw) and maxilla (upper jaw). These sockets are called as tooth sockets. Human shows both diphyodont and monophyodont types of dentition. In diphyodont dentition, there are 2 sets of teeth, namely deciduous and permanent set. In monophyodont dentition, there is only 1 set of teeth. In humans, molar teeth show monophyodont dentition and rest teeth show diphyodont dentition. Pharynx is part of both digestive and respiratory system. Pharynx opens into oesophagus in digestive system and larynx in respiratory system. 

Thus, the correct answer is 'a, b , c & d.'

Which of the following part is excluded from the study of T.S. of gut.

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. Pharynx

  2. Esophagus

  3. Colon

  4. Rectum

Show answer
Correct Option: A
Explanation:

Esophagus, colon and rectum are studied with the T.S. of the gut. They are all a part of the digestive system where is wearing is a part of the digestive as well as the respiratory system and it is not studied along with them.

So the correct option is 'Pharynx'.

In which organ the digestion of protein starts in the human digestive tract?

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. Mouth

  2. Oesophagus

  3. Stomach

  4. Small intestine

Show answer
Correct Option: C
Explanation:

It begins in the stomach by pepsin which breaks down the peptide bind and makes protein smaller for easier digestion. Trypsin and chymotrypsin are also enzymes that are created by the pancreas and will cut down proteins into small peptides. 


So the correct option is "stomach".

Which of these is a part of your digestive system?

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. Stomach

  2. Pancreas

  3. Rectum

  4. All of the above.

Show answer
Correct Option: D
Explanation:

All of these choices are a part of your digestive system. Your digestive system has many other associated organs including the small intestine, large intestine, and liver. The stomach is an area of food digestion. The pancreas releases hormones, that affect the digestive process. The rectum is the last place you store you food before the process of elimination (pooping).

What tube is used by both the digestive and respiratory systems?

evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

  1. Esophagus

  2. Larynx

  3. Pharynx

  4. None of these.

Show answer
Correct Option: C
Explanation:

The pharynx connects the mouth to an area in your throat with a flap. The flap is the epiglottis. The flap moves to one side for food and the other side as you breathe. The branching point leads to the larynx or the esophagus.