Common symptoms, which indicate sickness are: (i) Headache, (ii) Cough and (iii) Loose motion. Even seeing one symptoms. I will go to doctor. Reason: A single symptom is the sign of a disease. On delaying, it may lead to serious illness. For example, headache may mean meningitis. For more answers viRead more
Common symptoms, which indicate sickness are:
(i) Headache,
(ii) Cough and
(iii) Loose motion.
Even seeing one symptoms. I will go to doctor.
Reason: A single symptom is the sign of a disease. On delaying, it may lead to serious illness.
For example, headache may mean meningitis.
(i) Remain away from specific and particular cause for discomfort or disease. For which personal and public cleanliness and good physical environment are necessary. (ii) Proper and sufficient food necessary for functioning of cells and tissues of the body. For more answers visit to website: https://Read more
(i) Remain away from specific and particular cause for discomfort or disease. For which personal
and public cleanliness and good physical environment are necessary.
(ii) Proper and sufficient food necessary for functioning of cells and tissues of the body.
'Health' is a state of being well enough to function well physically, mentally and socially. Therefore, for good health. (i) One should be disease free. (ii) There should be social equality and harmony which are essential for individual health particularly for social and mental health. For more answRead more
‘Health’ is a state of being well enough to function well physically, mentally and socially.
Therefore, for good health.
(i) One should be disease free.
(ii) There should be social equality and harmony which are essential for individual
health particularly for social and mental health.
Vertebrates are classified into further subgroups on following bases: 1. Pisces: The body is streamlined. Muscular tail is present which assists in locomotion. Body is covered with scales. Paired gills are present; which can breathe oxygen dissolved in water. They are cold-blooded animals. The heartRead more
Vertebrates are classified into further subgroups on following bases:
1. Pisces: The body is streamlined. Muscular tail is present which assists in locomotion.
Body is covered with scales. Paired gills are present; which can breathe oxygen dissolved in water.
They are cold-blooded animals. The heart has only two chambers. They lay eggs.
2. Tetrapoda: Animals have four limbs for locomotion and hence the name tetrapoda.
Tetrapoda is divided into four classes, viz. amphibia, reptilia, aves and mammalia.
(a) Amphibia: These animals are adapted to live both in water and land. Mucus glands on
skin keep the skin moist. The animals breathe through skin when in water and through lungs when
on land. The heart has three chambers. These are cold blooded animals. Examples: Frog, toad,
salamander, etc.
(b) Reptilia: These animals show crawling movement for locomotion. Skin is hardened to
form scales. Most of the reptilians have three chambered heart but crocodile has four-chambered
heart. They don’t need water to lay eggs, rather eggs are covered with hard shells and laid on land.
Examples: snakes, lizards, crocodile, turtle, etc.
(c) Aves: The body is covered with feathers. Forelimbs are modified into wings. These are
warm-blooded animals. The heart has four chambers. Bones are hollow (pneumatic); which assists
in flying. All the birds belong to this class.
(d) Mammalia: The body is covered with hairs. Skin has seat glands and sebaceous glands.
Mammary glands are present in females and are used for nourishing the young ones. Most of the mammalians give birth to young ones and are called viviparous. Some of the mammals lay eggs and are called oviparous. Examples: human, chimpanzee, lion, platypus, horse, etc.
In the plant kingdom, morphological characters are taken into consideration while deciding about the divisions. Morphology is the study of shapes and forms of various parts. In the animal kingdom, anatomical characters are taken into consideration while deciding about subgroups. Anatomy is the studyRead more
In the plant kingdom, morphological characters are taken into consideration while deciding about the divisions. Morphology is the study of shapes and forms of various parts. In the animal kingdom, anatomical characters are taken into consideration while deciding about subgroups. Anatomy is the study of various organs’ design in animals.
List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor? Why or why not?
Common symptoms, which indicate sickness are: (i) Headache, (ii) Cough and (iii) Loose motion. Even seeing one symptoms. I will go to doctor. Reason: A single symptom is the sign of a disease. On delaying, it may lead to serious illness. For example, headache may mean meningitis. For more answers viRead more
Common symptoms, which indicate sickness are:
(i) Headache,
(ii) Cough and
(iii) Loose motion.
Even seeing one symptoms. I will go to doctor.
Reason: A single symptom is the sign of a disease. On delaying, it may lead to serious illness.
For example, headache may mean meningitis.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-13/
State any two conditions essential for being free of disease.
(i) Remain away from specific and particular cause for discomfort or disease. For which personal and public cleanliness and good physical environment are necessary. (ii) Proper and sufficient food necessary for functioning of cells and tissues of the body. For more answers visit to website: https://Read more
(i) Remain away from specific and particular cause for discomfort or disease. For which personal
and public cleanliness and good physical environment are necessary.
(ii) Proper and sufficient food necessary for functioning of cells and tissues of the body.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-13/
State any two conditions essential for good health.
'Health' is a state of being well enough to function well physically, mentally and socially. Therefore, for good health. (i) One should be disease free. (ii) There should be social equality and harmony which are essential for individual health particularly for social and mental health. For more answRead more
‘Health’ is a state of being well enough to function well physically, mentally and socially.
Therefore, for good health.
(i) One should be disease free.
(ii) There should be social equality and harmony which are essential for individual
health particularly for social and mental health.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-13/
Explain how animals in Vertebrata are classified into further subgroups.
Vertebrates are classified into further subgroups on following bases: 1. Pisces: The body is streamlined. Muscular tail is present which assists in locomotion. Body is covered with scales. Paired gills are present; which can breathe oxygen dissolved in water. They are cold-blooded animals. The heartRead more
Vertebrates are classified into further subgroups on following bases:
1. Pisces: The body is streamlined. Muscular tail is present which assists in locomotion.
Body is covered with scales. Paired gills are present; which can breathe oxygen dissolved in water.
They are cold-blooded animals. The heart has only two chambers. They lay eggs.
2. Tetrapoda: Animals have four limbs for locomotion and hence the name tetrapoda.
Tetrapoda is divided into four classes, viz. amphibia, reptilia, aves and mammalia.
(a) Amphibia: These animals are adapted to live both in water and land. Mucus glands on
skin keep the skin moist. The animals breathe through skin when in water and through lungs when
on land. The heart has three chambers. These are cold blooded animals. Examples: Frog, toad,
salamander, etc.
(b) Reptilia: These animals show crawling movement for locomotion. Skin is hardened to
form scales. Most of the reptilians have three chambered heart but crocodile has four-chambered
heart. They don’t need water to lay eggs, rather eggs are covered with hard shells and laid on land.
Examples: snakes, lizards, crocodile, turtle, etc.
(c) Aves: The body is covered with feathers. Forelimbs are modified into wings. These are
warm-blooded animals. The heart has four chambers. Bones are hollow (pneumatic); which assists
in flying. All the birds belong to this class.
(d) Mammalia: The body is covered with hairs. Skin has seat glands and sebaceous glands.
Mammary glands are present in females and are used for nourishing the young ones. Most of the mammalians give birth to young ones and are called viviparous. Some of the mammals lay eggs and are called oviparous. Examples: human, chimpanzee, lion, platypus, horse, etc.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-7/
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
In the plant kingdom, morphological characters are taken into consideration while deciding about the divisions. Morphology is the study of shapes and forms of various parts. In the animal kingdom, anatomical characters are taken into consideration while deciding about subgroups. Anatomy is the studyRead more
In the plant kingdom, morphological characters are taken into consideration while deciding about the divisions. Morphology is the study of shapes and forms of various parts. In the animal kingdom, anatomical characters are taken into consideration while deciding about subgroups. Anatomy is the study of various organs’ design in animals.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-7/