Match the organism in Column-I with its excretory structure in Column-II
|
Column-I |
|
Column-II |
(A) |
Cockroach |
(p) |
Nephridia |
(B) |
Earthworm |
(q) |
Proboscis gland |
(C) |
Balanoglossus |
(r) |
Kidney |
(D) |
Clarias |
(s) |
Malpighian tubules |
1. (A)(s),(B)(p),(C)(q),(D)(r)
2. (A)(s),(B)(p),(C)(r),(D)(q)
3. (A)(q),(B)(p),(C)(r), (D)(s)
4. (A)(s), (B)(q),(C)(r),(D)(p)
Which one of the following features are not true for chordates?
(a) Heart is dorsal.
(b) Pharynx is perforated by gill slits.
(c) Central nervous system is ventral, solid and single.
(d) Post-anal tail is present.
(e) Notochord is present.
Choose the most appropriate answer from the option give below:
1. | (e) only | 2. | (a), (d) and (c) only |
3. | (b) and (c) only | 4. | (a) and (c) only |
Which of the following characteristic features always holds true for the corresponding group of animals?
1. | Viviparous | Mammalia |
2. | Possess a mouth with an upper and a lower jaw | Chordata |
3. | 3-chambered heart with one incompletely divided ventricle | Reptilia |
4. | Cartilaginous – endoskeleton | Chondrichthyes |
Which of the following represent the correct combination without any exception?
Characteristic |
Class |
(1) Mammary gland; hair on body; pinnae; two pairs of limbs |
Mammalia |
(2) Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord |
Chondrichthyes |
(3) Sucking and circular mouth; jaws absent; integument without scales; paired appendages |
Cyclostomata |
(4) Body coverd with feathers; skin moist and glandular; lungs with air sacs; fore limbs form wings |
Aves |
Which of the following statement/s about chondrichthyes are incorrect?
1) Notochord is persistent throughout life
2) Endoskeleton is made up of bones
3) Operculum present
4) Skin is covered by placoid scales
(1) All of the above
(2) None of the above
(3) 1 and 4 are incorrect
(4) 2 and 3 are incorrect
All cyclostomes are ___________ on some fishes; paired fins are _________, cranium is ________ and circulation is _______ type.
1. Ectoparasites, Absent, Cartilaginous, Open
2. Endoparasites, Present, Bony, Closed
3. Ectoparasites, Absent, Cartilaginous, Closed
4. Ectoparasites, Present, Cartilaginous, Open
Read the following statements :
A. Mouth is located ventrally.
B. Notochord is persistent throughout life.
C. Gill slits are seperate and with operculum.
D. Air bladder are absent.
How many of the above statements are correct for given
figure :
1. Four.
2. Three.
3. Two.
4. One
Consider the following characters:
I. Air bladder
II. Operculum
III. Viviparity
The characters present in bony fishes include:
1. | I, II and III | 2. | I and III only |
3. | I and II only | 4. | II and III only |
Operculum and an air bladder are present in :
1. Clarias
2. Pristis
3. Trygon
4. Carcohrodon
Match each item in Column I with one item in Column II and chose your answer from the codes given below.
Column I |
Column II |
I. Placoid Scales II. Ctenoid scales III. Ectoparasites IV. Proboscis gland |
1. Chondrichthyes 2. Osteichthyes 3. Hemichordata 4. Cyclostomata |
Codes:
I II III IV
1. 1 2 3 4
2. 2 1 4 3
3. 2 1 3 4
4. 1 2 4 3