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1001.

Question : Make a herbarium of cereals, pulses and oil seeds and identify the seasons of their sowing and harvesting.

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SOLUTION :STUDENTS are EXPECTED to PERFORM this ACTIVITY on their own.
1002.

Question : Dark reaction occures in the …………

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ANSWER :STROMA of CHLOROPLAST
1003.

Question : Maize is plant belonging to class.........

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SOLUTION :MONOCOT
1004.

Question : Dairy farming is referred as………………

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SOLUTION :WHITE REVOLUTION.
1005.

Question : Macronutrients and Micronutrients.

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SOLUTION :
1006.

Question : Ctenidia are repiratory organ in ………….

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ANSWER :OCTOPUS
1007.

Question : Macronutrients.

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Solution :NUTRIENTS that are REQUIRED for the PLANTS in large QUANTITIES are called macronutrients.
1008.

Question : Crops like sunnhemp and guar are commonly grown for green manuring .

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ANSWER :T
1009.

Question : Lysosome is called the digestive bag as well as the suicidal bag of the cell.

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Solution :(1 ) Lysosomes are small, rounded bags lying scattered in the cytoplasm. They contain hydrolase TYPE of enzymes for the digestion of organic food components in the cell.
(2) These enzymes digest and destroy the bacteria and viruses that invade from outside the cell and thereby protect the body against Infection.
(3) They digest and destory food particles and other substances entering the cell.
( 4 ) Thus, lysosomes cause intracellular digestion and hence they are called digestive bags.
(5) In the state of senescence of the cell the structure of the cell gets disorganized and the cell is EITHER damaged or its metabolism is disturbed. In thal CASE the enzymes from the lysosomes come out in the cell and digest and destroy all the cell organelles therein.
Hence, the lysosome is called the digestive bag as well as the suicidal bag of the cell.
1010.

Question : Crop rotation

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Solution :The growing of different crops on a PIECE of LAND in a PRE planed succesion is KNOWN as crop rotation.
1011.

Question : Lymphatic system participate in the defence mechanism of the body - substantiate.

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Answer :The lymph nodes seen at intervals in the lymph DUCTS are the MAJOR production centre of lymphoctyes, a KIND of white blood CELLS.
1012.

Question : Correct the mistakes if any, in the underlined part of the statements. Tidal volume is the volume of air that can be breathed out by a forceful expiration after maximum Inspiration.

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ANSWER :VITAL CAPACITY is the VOLUME of air that can be breathed out by a FORCEFUL expiration after maximum inspiration
1013.

Question : Lymph is devoid of

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monocyte
lymphocyte
erythrocyte
protein

Answer :C::D
1014.

Question : Look at the pictures given below and answer the questions that follow : 1. Are the teeth of animals similar to ours ? 2. How is the shape of their teeth related to their food habit ?

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Solution :1. Not all the teeth are similar to ours.
2. The lion is a CARNIVORE and hence CANINE teeths are PREDOMINANT.
The BUFFALO is a herbivorous animals and incissors are predominant in them.
1015.

Question : Consider the following functions of the heart and identify the parts performing them. Carries blood from various parts of the body.

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ANSWER :VENACAVA.
1016.

Question : Long white eggs are produced by …………. .

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ANSWER :WHITE LEGHORN;
1017.

Question : Consider the following functions of the heart and identify the parts performing them. Carries blood to various parts of the body.

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ANSWER :AORTA
1018.

Question : Consider the following functions of the heart and identify the parts performing them. Brings blood from the lungs.

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ANSWER :Pulmanory VEIN.
1019.

Question : Lizard is an animal of class Reptilia.

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ANSWER :T
1020.

Question : Consider the following functions of the heart and identify the parts performing them. Carries blood to lungs.

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ANSWER :Pulmanory ARTERY
1021.

Question : Living cells were discovered by

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ROBERT Hooke
Purkinje
Leeuwenhoek
Robert Brown

Answer :C
1022.

Question : confiers are anigiosperms.

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ANSWER :(F)
1023.

Question : Conduct a survey in your neighbourhood out what the linee diseases are. Suggest three steps that could be taken by your local authorities to be bring down the the incidence of these diseases.

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Solution :(Students are expected to CARRY out survey on their own and then write about the common diseases from their LOCALITY, however here examples are chosen at random.)
(1) The three most common diseases in our area are DENGUE, hepatitis and dysentery.
(2) The following steps can be taken by local authorities to curtail the incidence of these diseases :
(a) Removal of all stagnant water poodles. In larger water bodies, guppy fish can be introduced so that there will be mosquito control. The mosquito Aedes breeds mostly in artificial man-made containers. Therefore, the area will be checked for any containers such as old tyres, drums, tanks, or plastic containers. Dengue can be controlled by eradicating Aedes.
(b) For prevention of hepatitis and dysentery, water source will be checked for the presence of pathogens. People will be instructed to boil and filter water so as to make it safe for drinking.
(c) Road side eateries will be shut down as they SERVE the contaminated food. This can transmit the PROTOZOAN Amoeba that causes dysentery. Awareness programmes will be taken to warn people against these diseases.
1024.

Question : List two similarities between mitochondria and plastids.

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Solution :(i) Both are double-membrane BOUND organelles.
(ii) Both are capaable of producing some of their own proteins DUE to possession of DNA, RNA, Ribosomes and enzymes.
1025.

Question : Computer operates by the exchange of __________ between the hardware and software

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SOLUTION :COMMANDS
1026.

Question : List three special processes which are involved in the bulk transport of materials in and out of the animal cells.

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SOLUTION :ENDOCYTOSIS, PHAGOCYTOSIS and EXOCYTOSIS.
1027.

Question : Compost is a ............. as well as a fertilizer which is rich in nutrients.

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SOLUTION :SOIL CONDITIONER
1028.

Question : List three groups of plants. Which plants are referred to as vascular plants ? Out of these which group is further classified on the basis of number of cotyledon ? State its two characteristics.

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ANSWER :N/a
1029.

Question : Compost for mushroom cultivation is prepared by mixing...........with number of organic materials like cow dung and inorganic fertilizers.

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SOLUTION :PADDY STRAW
1030.

Question : List thre similarities and dissimilarities between hemichordates and chordates.

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Answer :Similarities
1 PRESENCE of notochord
2 Presene of gill SLITS
3 Presence of dorsal hollow nerve cord
Dissimilarities
1. Gill slits ar dorsa in POSITION in HEMICHORDATES but lateral in position in chordanates .
2. Unlikethat ofb chrodates, notochods in hemichordates in short, ventral to the vessel, UNCOVERED shethas ans is called stomochord.
3 In hemichordates, dorsal hollow nerve cord is confined to the collar region only
1031.

Question : Complete the word relations. Light reaction : Grana Dark reaction : ………….

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ANSWER :STROMA
1032.

Question : List the various types of blood cell.

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ANSWER :RED BLOOD cells.White blood cells.Platelets.
1033.

Question : Complete the word relation Starch : Maltose Protein : ………………

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ANSWER :PEPTIDES
1034.

Question : List the two types of food requirements of dairy animals.

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Solution :The two types of REQUIREMENTS of diary animals are:1 Maintenance REQUIREMENT, which is the FOOD required to support the animal to LIVE a healthy life. 2. MILK producing requirement,which is the type of food required durign the lactation period.
1035.

Question : Complete the word relations. Green plants : land ……….. : Ocean

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ANSWER :ALGEA
1036.

Question : List the six factors for variety improvement of crop.

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Solution :1. Higher yield, 2. IMPROVED QUALITY, 3. Biotic and abiotic resistance 4. change in the maturity duration 5. Wider adaptability and 6. Desirable AGRONOMIC characteristics.
1037.

Question : Complete the word relations. ……….. :bluish green Carotene : yellowish orange

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ANSWER :CHLOROPHYLLA
1038.

Question : Complete the word relation Salivary amylaze : ………………… Lysozyme : destroy germs

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ANSWER :MALTOSE
1039.

Question : List the respiratory organs of amphibians.

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SOLUTION :The respiratory ORGANS of AMPHIBIANS are gills, LUNGS, skin and pharyngeal REGION.
1040.

Question : Complete the word relation : Osmosis : absorption of water …………. : absorption of amino acid.

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ANSWER :FACILITATED DIFFUSION
1041.

Question : List the medicinal importance of honey.

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Solution :Uses of Honey
Honey has an antiseptic and antibacterial property.It is a blood PURIFIER.
It helps in building up of haemoglobin content in the blood
It is used in Ayurvedic and Unani SYSTEM of medicines.
It prevent cough, cold, fever and relieves sore throat.
It is a remedy for ulcers of TONGUE, stomach and intestine.
It enhances digestion and appetite.
1042.

Question : Complete the word relation. Liver : ………………….. Pancreas : pancreatic juice.

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ANSWER :BILE
1043.

Question : List some organisms having common features of plants and animals and justify their position in classification.

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ANSWER :N/a
1044.

Question : Complete the word relation. Bronchus:cartilaginous rings. ….....: no cartilaginous rings.

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ANSWER :TRACHEA
1045.

Question : List some of the ways in which you could save water in your home and school?

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Solution :* When washing dishes, don.t let the tap be open. FILL one sink with WASH water and anotherwith RINSE water.
* Adjust sprinklers so that only the plants are WATERED.
* Install rain water tanks,
* Use hose water once a week to clean the driveway and sidewalk.
* Be sure to TURN off the tap while not in use,
1046.

Question : Complete the word relation Enamel : dead tissue …………. : living tissue

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ANSWER :DENTINE
1047.

Question : List out the generations of computer

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SOLUTION :
1048.

Question : Complete the table of cellular respiration

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ANSWER :CYTOPLASM
Mitochondria
Not REQUIRED
Required
2
28
1049.

Question : Complete the table in connection with the chemical changes of food?

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Answer :A-Salivary AMYLASE
B-Converts protein to PEPTONES PARTIALLY
C-Pancreatic LIPASE
1050.

Question : Complete the table?

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Answer :a)Starch
b) FRUCTOSE
c) MUSTARD
d) PROTEIN