Advertisements
Advertisements
Question
Visit a green house if there is one near your place. Observe how they grow plants. Find out how they regulate the amount of light, water and carbon dioxide to grow the plants.
Solution
-
Light Regulation:
- Use of Shading Nets: To control the amount of sunlight entering the greenhouse.
- Artificial Lighting: Additional lights may be used to ensure plants receive adequate light during low natural light conditions.
-
Water Regulation:
- Drip Irrigation Systems: Efficiently delivers water directly to the plant roots.
- Sprinkler Systems: Evenly distributes water over the plants.
- Humidity Control: Humidifiers or misters may be used to maintain the desired humidity levels.
-
Carbon Dioxide Regulation:
- Ventilation Systems: Ensures proper air circulation and CO2 levels.
- CO2 Enrichment: Some greenhouses use CO2 generators to increase the carbon dioxide concentration to enhance plant growth.
RELATED QUESTIONS
Name the mode of nutrition in roundworm.
What is the mode of nutrition in Amoeba known as?
The process of obtaining food by Amoeba is known as:
(a) dialysis
(b) cytokinesis
(c) phagocytosis
(d) amoebiasis
The organism having parasitic mode of nutrition is:
(a) Penicillium
(b) Plasmodium
(c) Paramecium
(d) Parrot
Two of the following organisms have a holozoic mode of nutrition. These organisms are:
(a) Paramecium and Plasmodium
(b) Plasmodium and Parakeet
(c) Parakeet and Paramecium
(d) Paramecium and Parasite
There are four organisms A, B, C and D. The organism A eats only the flesh of other animals as food. The organism B can eat grains, fruits and vegetables as well as meat and fish. The organism C can make the food itself from simple inorganic substances present in the environment by utilising sunlight energy. On the other hand, organism D eats only plants and their products as food.
(a) Which organism is (i) omnivore (ii) herbivore, and (ii) carnivore?
(b) Which organism is an autotroph?
(c) Which organism is/are heterotroph(s)?
(d) Which organism can be a producer?
(e) Which organism is/are consumer (s)?
(f) Give one example each of organisms which could be like (i) A (ii) B (iii) C, and (iv) D
One of the following organisms can live without oxygen of air. This organism is
(a) Amoeba
(b) Yak
(c) Yeast
(d) Leech
List two differences between 'Holozoic nutrition' and 'Saprophytic nutrition'. Give two examples of each of these two types of nutrition.
Match the organisms given in Column I with their mode of nutrition given in Column II.
| Column 1 | Column II | ||
| (a) | Mango tree | (i) | Insectivorous plant |
| (b) | Mushroom | (ii) | Heterotrop |
| (c) | Pitcher plant | (iii) | Autotroph |
| (d) | Cuscuta | (iv) | Saprophyte |
| (e) | Elephant | (v) | Parasitic |
Can you give me a name?
Solve each of the following riddles by writing the name of the organism and its mode of nutrition. One riddle is solved to help you.
I live in water; people keep me in an aquarium and feed me. ______, ______
