1. A white-cottony growth on a piece of bread which is left in a moist warm place for 2-3 days is
(a) a parasite called Cuscuta.
(c) an insectivorous plant called bladderwort. (d) none of these.
(b) a fungus called bread mould.
2. The digestive juices present in saliva act on
(a) starch.
(b) proteins.
(c) fats.
(d) cellulose.
3. Which of the following fibre is a good insulator?
(a) Cotton
(b) Silk
(c) Jute
(d) Nylon
4. The SI unit of temperature is
(a) fahrenheit
(b) kelvin.
(c) celsius.
(d) none of these.
5. Which of the following is a symbiotic plant?
(a) Cuscuta
(b) Lichen
(c) Yeast
(d) Pitcher plant
6. Humans are
(a) herbivores.
(b) carnivores. (c) omnivores. (d) autotrophs.
Answers
Answer:
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Explanation:
1a)
A white cottony growth on a piece of bread which is left in a moist warm place for 2-3 days is. a parasite called Cuscuta
2b) proteins.
Saliva contains the enzyme amylase, also called ptyalin, which is capable of breaking down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine.
3a)Cotton
4b)kelvin
The kelvin is the SI unit of thermodynamic temperature, and one of the seven SI base units. Unusually in the SI, we also define another unit of temperature, called the degree Celsius (°C).
5b) Lichen
The algae is a photosynthetic plant and as a result of this you can produce food by the process of photosynthesis.
6c) omnivores.
Herbivorous animals are referred to as primary consumers whereas carnivorous and omnivorous animals are referred to as secondary consumers. A human being is an omnivorous animal. An omnivorous animal is a group of animals that consume and survive on both plants and animals.
Answer:
1. (a). a parasitic called cuscuta
2.(b). proteins
3.(a). cotton
4.(b). Kelvin
5.(b). lichen
6.(c). omnivi