Annelid Arthropods Body is segmented into rings. Body is covered with hairs. Answer: i The average weather taken over a long time is called climate. Similarly, as one proceeds further through chapter 7, topics such as Animalia including Porifera, Coelenterata Cnidaria , Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, Echinodermata, Protochordata, Vertebrata will be learnt. You will be given an image where you have to mark the places where conduction, convection and radiation happens. Answer 3: i Iodised salt supplies sufficient amount of iodine through our diet, even in the areas where iodine is not available naturally through water or otherwise in diet.
Angiosperm 1 They are highly evolved plants and produce seeds that are enclosed within fruit. Download options are given at the end of these solutions. More growth occurs on the free side. These pads can handle their enormous weight. Online classroom courses have come as a boon for the tech-savvy children of today. Answer: The method of arranging organism into groups or sets on the basis of similarities and differences is called classification. It is not at all justified to cut trees to meet the ever increasing demands of human population.
Visit to of the page to select the other chapters. In the hierarchy of classification, which grouping will have the smallest number of organisms with maximum common characteristics and which will have the largest number of organisms? Deficiency of thyroxine disturbs metabolic, physical and mental activities besides causing disorders of simple goitre, cretinism and myxedema. This is because the type of cell forms the basis for classification. T iv The fishes have lungs for respiration. Leaves are flat Leaves are needle like They are seasonal They are evergreen.
Variety of plants, animals and microorganisms found in an area. If you have any doubts, please comment below. The odorant molecules are trapped in mucus present over olfactory epithelium. Visit to of the page to select the other chapters. Why do tropic movements takes place in plants? A small gap is required between two impulses. Immediate response to stimulus is shown by Mimosa pudica.
All the concepts will be easy for you. Organisms migrate from one place to another to avoid inhabitable climatic conditions or for breeding. Explain why it is so. It is an artificial habitat. They produce naked embryos called spores. What problems are likely to arise? Download options are given at the end of these solutions.
This is kept under check by regular injection of insulin. These pollutants should be treated chemically to make them harmless before they are disposed. For Ex:Frogs, toads, Salamander, hyla Reptilia 1 They are cold blooded terrestrial or aquatic vertebrates. Name the control — voluntary V , involuntary I and endocrine E in the following Key or Check list Items : Action Control i Peristalsis ………………. We will be seeing questions on conductors and insulators and their examples. Download options are given at the end of these solutions.
Do you know why the buildings in hotter climate is painted white on the outside, want to know the answer to that question? They increase the fertility of the soil and help conserve biodiversity. If you need any help, please feel free to contact us. Neurotransmitter comes in contact with chemoreceptor sites of the membrane of postsynaptic depression. The proportion of large particles is higher. Answer Leaves are known as the food factories of plants. It is very difficult to study all of them one by one.
Stems generally bend towards the direction of light. The driver sees in his rear view mirror the image of truck parked behind his car. This irritation happens when we inhale some unwanted particles and they get trapped in our nasal cavity. For growing crops such as wheat, gram, and paddy, the soil that is good at retaining water and rich in organic matter is suitable. Sow several seeds of Pea or Gram. Answer: The mountaineers carry oxygen with them because: a At an altitude of more than 5 km there is no air. Ways by which paper can be saved: i Collect used paper and recycle it.
It moves the food below the teeth. The attached risk of accidents while sending such young students for coaching classes early morning or at late evenings is another issue. List three reasons to justify this statement. Clay and loam are suitable for cereals like. If there is any trouble in comprehending a topic related to science, the student can refer to the solutions related to each and every topic covered in Class 7 science.
They do not need water to lay eggs. Question 5: Tick the correct answer: a In cockroaches, air enters the body through i lungs ii. The animal may not be able to correct its position and fall down repeatedly if its statoreceptors are damaged. All these responses together help an athlete to prepare for running. Students can find complete chapterwise solutions to all the exercise problems included in the. Why are some patients of diabetes treated by giving injections of insulin? Travelling knocks off a plentiful of precious study time from a student's routine.