Byjus Cbse Class 9 Maths Sample Paper Value,Boat And Stream Questions Usa,Steamboat Pot Brand Zoom - For Begninners
Objective To show that the angles subtended by the chord of a circle in the same segment are equal, experimentally. Materials Required Glazed papers, sketch pens, a pair of scissors, gluestick, geometry box, white sheet.
When two angles superimpose each other it means their two arms lie on one. This verifies that angles in the same segments are equal. Result We verified that two angles subtended by the chord of a circle in the same segment are equal.
Learning Outcome We learnt that two or more angles subtended by same chord in the same segment of a circle are equal. Question 1. Define chord of a circle.
Question 2. How many longest chords are there in a circle? Answer: There are infinity many longest chords in a circle passing through the centre.
Question 3. Define minor segment of a circle. Answer: A chord divides a circle into two parts the smaller part is called as minor segment. Question 4. Define major segment of a circle. Answer: The larger part of claass circle is called as major segment. Question 5. What is the measure of an angle formed in a semicircle? Question 6. Question 7. If the angle byjus cbse class 9 maths sample paper value by an arc at the centre in major segment is reflex angle, then what is the angle in the minor segment?
Answer: Obtuse angle. Question 8. The angle subtented by an arc at the circle in minor segment is obtuse angle. What is the values of angle subtended by it in the major segment?
Answer: Acute angle. Question 9. In a circle, AB is a diameter, Q, P are any points on the circle. Sampple To observe and draw the given specimens � earthworm, cockroach, bony fish and bird. For each specimen record. Each animal has certain features which enable it cbs live in its habitat.
The special features which enable plants and animals to be successful in a particular environment are called adaptations. Adaptations are due to certain modifications that are observed in organism at morphological, anatomical and physiological levels. By observing simple morphological features different adaptations found in organisms can be studied.
Adaptive Features Earthworm lives inside a burrow in the soil. It has following adaptations:. They are found in sewers, basements, in drains. They are adapted to nocturnal habit. Following are adaptations found in cockroaches.
Bony fish It belongs to phylum Chordata, sub phylum Vertebrata and class Pisces. Adaptive Features Bony fish adaptive to live in water aquatic adaptations.
Adaptive Features Birds are adaptive to aerial mode of life to live in air. Following adaptations are found in. Examiner : What do you mean by adaptations? Examinee: Adaptations are modifications in organism which help it to adjust in its habitat. Examiner : State any two aquatic adaptations. Examiner : Name the sensory organ claes fish.
Examinee: Lateral line. Examiner : What is the function of tail fins of fish? Examinee: Tail fin helps fish in changing direction. Examiner : Why Byjus Cbse Class 9 Maths Sample Paper University is it that fish can see clearly in water but not humans?
Examiner : What is vermicomposting? Examinee: Earthworms add manure to soil in form of its castings, this is vermicomposting. Examiner : Byjus cbse class 9 maths sample Byjus Cbse Class 9 Maths Sample Paper Co paper value the feature of skin in earthworm which makes it suitable for respiration. Examinee: In earthworm, the skin is rich in mucous glands which keeps the skin always moist.
Examiner : Give the technical term for respiration through skin. Examinee: Cutaneous respiration. Examiner : Why is it said that amphibians have dual mode of life? Examinee: Amphibians can live both on land and in water and have organs to support this mode of life. Examiner : Differentiate between the type of body segments present in earthworm and cockroach. Examinee: Byjus cbse class 9 maths sample paper value earthworm, body is segmented both internally and externally into metameres whereas cockroach is segmented only externally.
Examiner : What are food habits of cockroach? Examinee: Cockroach is an omnivore, with cutting and biting mouth parts. Examiner : The exoskeleton of cockroach is made up of what? Examinee: Chitin. Examiner: Name a matys organ of humans which is of great importance for birds and fish. Examinee: Nictitating membrane on eye helps the eyes to remain open and aids in clear vision in air and water for birds and fish, respectively. Examiner: Szmple from helping the birds to fly, what is cbes important feature of feathers on the body of birds?
Examinee: Feathers byius provide insulation. Examiner: What is the difference between the endoskeleton of bony fish and cartilaginous fish? Examinee: In case of bony fish, endoskeleton is made up of bones whereas in cartilaginous fish, it is made up of cartilage. Examiner: Give any two examples of bony fish. Examinee: Labeo, catla. Examinee: Oviparous means egg laying. Birds lay eggs. Examiner: What are upper and lower jaw in birds modified into?
Examinee: In birds, upper and lower jaw is modified into horny beak, which lack teeth. Examiner: Fore limbs of birds are modified for flying, what are hind limbs modified for?
Examinee: Hind limbs are modified for walking, perching or swimming. Question 1: Name mahs phyla to which earthworm,cockroach,bony fish and bird belong Answer:. Question 2: In which body segments of an earthworm is the clitellum found?
Answer: The byjus cbse class 9 maths sample paper value is found in segment of an earthworm. Question 3: How does a cockroach adapt itself cbbse a wide range of habitats? Answer: It undergoes hibernation to overcome unfavourable conditions. Question 4: Mention two adaptive characters of a bony fish besides the possession of a streamlined body and air bladder. Question 5: Feathers are an adaptive feature of birds.
How are they clwss to them? Answer: Feathers provide insulation and help in flying. Question 1: Earthworm is a bisexual with self-fertilisation b bisexual with cross-fertilisation c unisexual with cross-fertilisation d none of the. Question 2: Wings of a bird are modified form of a hindlimbs b forelimbs c both a and 6 d none of. Question 3: Abdomen of cockroach contains a 10 segments 6 8 segments c 20 segments d 5 segments. Question 4: Characteristics of phylum Arthropoda are a jointed legs b chitinous plates c compound eyes d all of.
Question 5: A feature absent in annelids is a clitellum b pseudocoelom c metameric segmentation d nephridia. Question 6: Museum specimens are preserved in a acetone b water c alcohol d formalin. Question 7: Byjus cbse class 9 maths sample paper value first segment of earthworm is called a peristomium b prostomium c clitellum d none of. Question 8: Setae in earthworm is made up of a lignin b chitin c cellulose d pectin.
Question 9: The distinguishing characteristic that places animals into the phylum chordata is a head byjus cbse class 9 maths sample paper value a pointed mouth ib post anal tail c presence of locomotory organs d bilaterally symmetrical body. Question The structure present in male cockroach, but absent in byjus cbse class 9 maths sample paper value cockroach is [NCT ] a Brood pouch b Compound eye c Anal style d Anal cerci.
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