Water vascular system is a characteristic feature of the phylum, Echinodermata. It consists of an array of radiating channels, tube feet, and madreporite. The water vascular system helps in locomotion, food capturing, and respiration. For more answers visit to website: https://www.tiwariacadeRead more
Water vascular system is a characteristic feature of the phylum, Echinodermata. It consists of an array of radiating channels, tube feet, and madreporite. The water vascular system helps in locomotion, food capturing, and respiration.
The phylum, Arthropoda, consists of more than two-thirds of the animal species on earth. The reasons for the success of arthropods are as follows. 1 Jointed legs that allow more mobility on land 2 Hard exoskeleton made of chitin that protects the body 3 The hard exoskeleton also reduces water loss fRead more
The phylum, Arthropoda, consists of more than two-thirds of the animal species on earth. The reasons for the success of arthropods are as follows.
1 Jointed legs that allow more mobility on land
2 Hard exoskeleton made of chitin that protects the body
3 The hard exoskeleton also reduces water loss from the body of arthropods making them more adapted to terrestrial conditions.
Taenia (Tapeworm) and Fasciola (liver fluke) are examples of parasitic platyhelminthes. Peculiar features in parasitic platyhelminthes are as follows. 1 They have dorsiventrally flattened body and bear hooks and suckers to get attached inside the body of the host. 2 Their body is covered with thickRead more
Taenia (Tapeworm) and Fasciola (liver fluke) are examples of parasitic platyhelminthes.
Peculiar features in parasitic platyhelminthes are as follows.
1 They have dorsiventrally flattened body and bear hooks and suckers to get attached inside the body of the host.
2 Their body is covered with thick tegument, which protects them from the action of digestive juices of the host.
3 The tegument also helps in absorbing nutrients from the host’s body.
Direct development:- 1. It is a type of development in which an embryo develops into a mature individual without involving a larval stage. 2. Metamorphosis is absent. 3. It occurs in fishes, reptiles, birds, and mammals. Indirect development- 1. It is a type of development that involves a sexually-iRead more
Direct development:-
1. It is a type of development in which an embryo develops into a mature individual without involving a larval stage.
2. Metamorphosis is absent.
3. It occurs in fishes, reptiles, birds, and mammals.
Indirect development-
1. It is a type of development that involves a sexually-immature larval stage, having different food requirements than adults.
2. Metamorphosis involving development of larva to a sexually mature adult is present.
3. It occurs in most of the invertebrates and amphibians.
Intracellular digestion:- 1. The digestion of food occurs within the cell. 2. Digestive enzymes are secreted by the surrounding cytoplasm into the food vacuole. 3. Digestive products are diffused into the cytoplasm. 4. It is a less efficient method. 5. It occurs in unicellular organisms. ExtracellulRead more
Intracellular digestion:-
1. The digestion of food occurs within the cell.
2. Digestive enzymes are secreted by the surrounding cytoplasm into the food vacuole.
3. Digestive products are diffused into the cytoplasm.
4. It is a less efficient method.
5. It occurs in unicellular organisms.
Extracellular digestion:-
1. The digestion occurs in the cavity of alimentary canal.
2. Digestive enzymes are secreted by special cells into the cavity of alimentary canal.
3. Digestive products diffuse across the intestinal wall into various parts of the body.
4. It is a more efficient method of digestion.
5. It occurs in multicellular organisms.
Water vascular system is the characteristic of which group of the following: (a) Porifera (b) Ctenophora (c) Echinodermata (d) Chordata
Water vascular system is a characteristic feature of the phylum, Echinodermata. It consists of an array of radiating channels, tube feet, and madreporite. The water vascular system helps in locomotion, food capturing, and respiration. For more answers visit to website: https://www.tiwariacadeRead more
Water vascular system is a characteristic feature of the phylum, Echinodermata. It consists of an array of radiating channels, tube feet, and madreporite. The water vascular system helps in locomotion, food capturing, and respiration.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/biology/chapter-4/
What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
The phylum, Arthropoda, consists of more than two-thirds of the animal species on earth. The reasons for the success of arthropods are as follows. 1 Jointed legs that allow more mobility on land 2 Hard exoskeleton made of chitin that protects the body 3 The hard exoskeleton also reduces water loss fRead more
The phylum, Arthropoda, consists of more than two-thirds of the animal species on earth. The reasons for the success of arthropods are as follows.
1 Jointed legs that allow more mobility on land
2 Hard exoskeleton made of chitin that protects the body
3 The hard exoskeleton also reduces water loss from the body of arthropods making them more adapted to terrestrial conditions.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/biology/chapter-4/
What are the peculiar features that you find in parasitic platyhelminthes?
Taenia (Tapeworm) and Fasciola (liver fluke) are examples of parasitic platyhelminthes. Peculiar features in parasitic platyhelminthes are as follows. 1 They have dorsiventrally flattened body and bear hooks and suckers to get attached inside the body of the host. 2 Their body is covered with thickRead more
Taenia (Tapeworm) and Fasciola (liver fluke) are examples of parasitic platyhelminthes.
Peculiar features in parasitic platyhelminthes are as follows.
1 They have dorsiventrally flattened body and bear hooks and suckers to get attached inside the body of the host.
2 Their body is covered with thick tegument, which protects them from the action of digestive juices of the host.
3 The tegument also helps in absorbing nutrients from the host’s body.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/biology/chapter-4/
What is the difference between direct and indirect development?
Direct development:- 1. It is a type of development in which an embryo develops into a mature individual without involving a larval stage. 2. Metamorphosis is absent. 3. It occurs in fishes, reptiles, birds, and mammals. Indirect development- 1. It is a type of development that involves a sexually-iRead more
Direct development:-
1. It is a type of development in which an embryo develops into a mature individual without involving a larval stage.
2. Metamorphosis is absent.
3. It occurs in fishes, reptiles, birds, and mammals.
Indirect development-
1. It is a type of development that involves a sexually-immature larval stage, having different food requirements than adults.
2. Metamorphosis involving development of larva to a sexually mature adult is present.
3. It occurs in most of the invertebrates and amphibians.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/biology/chapter-4/
Distinguish between intracellular and extracellular digestion?
Intracellular digestion:- 1. The digestion of food occurs within the cell. 2. Digestive enzymes are secreted by the surrounding cytoplasm into the food vacuole. 3. Digestive products are diffused into the cytoplasm. 4. It is a less efficient method. 5. It occurs in unicellular organisms. ExtracellulRead more
Intracellular digestion:-
1. The digestion of food occurs within the cell.
2. Digestive enzymes are secreted by the surrounding cytoplasm into the food vacuole.
3. Digestive products are diffused into the cytoplasm.
4. It is a less efficient method.
5. It occurs in unicellular organisms.
Extracellular digestion:-
1. The digestion occurs in the cavity of alimentary canal.
2. Digestive enzymes are secreted by special cells into the cavity of alimentary canal.
3. Digestive products diffuse across the intestinal wall into various parts of the body.
4. It is a more efficient method of digestion.
5. It occurs in multicellular organisms.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/biology/chapter-4/