Class 10th Science Biology Experiment 7 Characteristics of Chordate animals Solutions or Answer.
Aim : To study characteristics of chordate animals (1) Fish (2) Pigeon.
Apparatus : Specimens of any fish and a pigeon.
Procedure : Observe the specimens. Note down their characteristics and write down their classification.
1. Fish (Rohu)
Diagram : Label the different parts in the given diagram.
Fish (Rohu)
Classification of Rohu :
- Kingdom : Animalia
- Phylum : Chordata
- Subphylum : Vertebrata
- Class : Pisces
- Scientific name : Labeo rohita
Observations :
Characteristics of Rohu :
- Rohu is a fresh water fish having bony skeleton.
- The body is spindle shaped with dark or bluish black dorsal side and silvery white ventral and lateral sides.
- Exoskeleton is of scales.
- The head is large with a terminal mouth. Eyes are large, without eyelids.
- Gills are covered by bony operculum.
- The dorsal, ventral and caudal fins are unpaired while the pectoral and pelvic fins are paired.
- The caudal fin is used for changing the direction while swimming
2. Pigeon
Diagram : Label the different parts in the given diagram.
Classification of Pigeon :
- Kingdom : Animalia
- Phylum : Chordata
- Subphylum : Vertebrata
- Class : Aves
- Scientific name : Columba livia
Pigeon
Observations :
Characteristics of Pigeon :
- Pigeon’s body is divisible into four parts, viz., head, neck, trunk and tail.
- The head bears a pair of nostrils, a pair of eyes and a stout beak. There are no teeth .
- The forelimbs are modified into wings which are used for flying.
- The hind limbs are short used for perching.
- Digits are provided with claws.
- The exoskeleton is of feathers.
Multiple Choice Questions
Choose the correct alternative and write its letter (A), (B), (C), (D) in the box :
1. Which is the common body characteristics in fish and bird?
(A) 4 chambered heart (B) Stream-lined tapering body (C) Large eyes (D) Scales on the body
Answer: B
2. What are the locomotory organs in fish and bird respectively ?
(A) Wings-Fins (B) Fins-Wings (C) Wings-Legs (D) Legs-Fins
Answer: B
3. In fish, which part of the body is used for changing direction while swimming ?
(A) Pectoral fins (B) Caudal fins (C) Dorsal fins (D) None of these
Answer: B
4. Which of the following is a group of warm blooded animals?
(A) Pisces (B) Amphibia (C) Reptilia (D) Aves
Answer: D
5. Which pair of respiratory organs is present in Rohu and Pigeon respectively?
(A) Gills and lungs (B) Lungs and gills(C) Gills and Lungs aided with air sacs (D) Gills and Tracheae
Answer: C