1. The tiny openings present on the leaf surface. What are they called?
2. Why do some plants feed on insects?
3. Define parasites.
4. Fungus can be harmful and useful. Give an example showing both of these
traits of fungus.
5. Where is water from undigested food absorbed in the body?
6. What do you understand by term ‘assimilation’ in the process of digestion?
7. Where is saliva produced? Write about its main functions.
8. Which organ in the cow's digestive system differentiate it from that of human
beings?
9. Name some wool yielding animals.
10.What term is used for the process of
Washing of sheep’s fleece to remove dust, dirt, dried sweat and grease.
11.Name the stage next to caterpillar in the life cycle of silk moth.
12. Removing wool from animals body may cause harm to animal. How?
13. Differentiate between land breeze and sea breeze.
14.What steps should be taken while we use clinical thermometer?
Answers
Answer:
1) Stomata
2) They grow on soils lacking nitrogen
3) A parasite is an organism that lives on or in a host organism and gets its food from or at the expense of its host
4) Fungus are useful as they act as decomposers and decompose the dead things. Fungus are harmful as they can decompose fruits, grains and plants etc.
5) Large intestine
6) Assimilation is the movement of digested food molecules into the cells of the body where they are used.
7)Saliva is an extracellular fluid produced and secreted by salivary glands in the mouth. Functions of saliva include moistening food, and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin.
8)The main differences between cows and humans in the digestive system are the teeth, mouth, stomach, gut and enzymes. The digestion starts in the mouth with 32 teeth. After getting chewed in the mouth it goes to the Rumen. The Rumen is the main part of a cows four stomachs.
9) Sheep, Llama
10)SCOURING
11)The caterpillar or larvae are hatched from the eggs of the silk moth. The silkworms feed on mulberry leaves and give rise to pupa. In the pupa stage, a weave is netted around by the silkworm to hold itself.
12)The excess wool impedes the ability of sheep to regulate their body temperatures. This can cause sheep to become overheated and die. Urine, feces and other materials become trapped in the wool, attracting flies, maggots and other pests. This causes irritation, infections and endangers the health of the animal
13)Land Breeze Sea Breeze
The land breeze is shallow. However, the sea breeze is deep.
Land breezes are normally experienced during the winter and autumn. This is due to the cooler nights. Sea breezes normally occur during the spring and summer seasons. This is due to the consequential differences between land and water.
Land breezes’ pace span from 5 to 8 knots. Sea breezes’ pace span from 10 to 20 knots.
The temperature might remain the same when the land breeze occurs. Sea breeze tends to decrease the air temperature.
Land breezes usually blow dry winds. While the sea breeze contains more amount of moisture due to the particles absorbed from the water bodies.
14)The reading should be taken by keeping the level of mercury along the line of sight.
Before use, the mercury level should be below 35°C.
Wash the thermometer with water or an antiseptic solution before and after use.
Never hold the thermometer by the bulb while reading it.
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