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B. Intra cellular crystalline protein

(B) Intra cellular crystalline protein

52 u of He will contain 52/4 = 13 atoms of He

Carbohydrates are stored in the form of starch.

Some organisms live together and share food, water, nutrients and shelter. This mode of living is called symbiosis.

Leaves are green in colour due to the presence of chlorophyll.

The stem contains tube-like vessels through which water and minerals are transported to the leaves.

It is called fungimb

Plants who obtain their food from other trees or plants are called parasite whereas the tree or the plant from which the parasite obtains food is called the host.

1. Yes, we see that the colour, change occurs in the leaf of the plant kept in sunlight, but no colour change occurs in the leaf of the plant kept in dark.

2. Photosynthesis takes place in the presence of the sunlight. Due to which, starch is made in the leaves of the plant kept in sunlight and so the leaf turns blue – black in colour when iodine solution is dropped on it. Photosynthesis does not occur in the plant which was kept in the dark. Thus, starch is not present in its leaves. Hence, there is no colour change in its leaf. Starch reacts with iodine and imparts blue-black colour. This is called starch test.

The chlorophyll containing cells of plants, in the presence of sunlight use water, minerals and carbon dioxide to synthesize their own food. This process is called photosynthesis.

Those plants which in order to survive, trap insects and digest them are called insectivorous plants, e.g., drosera, dionaea, utricularia, pitcher plant. In pitcher plant, the leaf is modified to form a pitcher-like structure. The bright colour of the pitcher makes it attractive. The apex of the leaf forms a lid. Inside the pitcher, there are hairs which are directed downward. The mouth of the pitcher is sticky. When an insect lands in the pitcer, it slips and gets entangled into the hair present into the neck of the pitcher. As the hair are directed downwards, the insects are unable to escape out. The insect is digested by the digestive juices secreted in the pitcher.

These plants are found in swampy areas where the amount of nitrogen is insufficient.

(C) Myasthenia gravis

Cuscuta is not an insectivorous plant.

Correct Answer is: (C) Myasthenia gravis 

• Elephantiasis: Caused by Wuchereria Bancroft 

• Thalassemia: Caused by the genetic disorder 

• Myasthenia gravis: Autoimmune disease 

• Herpes: Caused by microorganism (virus)

Plants that obtain their food from other trees or plants are called parasite, e.g., Cuscuta

Correct Answer is: (B) Virus 

Rabies is caused by lyssaviruses, including the rabies virus and Australian bat lyssaviruses. It is spread when an infected animal bites or scratches a human or other animal. 

Saliva from an infected animal can also transmit rabies if the saliva comes into contact with the eyes, mouth, or nose.

Correct answer is (B) Virus

The organism which live on other plants and absorb nutrients from them are called para-sites. Cuscuta is the good example for parosites. It grows on some trees and absorb nutrients from the host tree.

The Organisms which take nutrients from dead and decaying matter is called as saprotrophic nutrition.

(i) Nutrition: Nourishing food, the study of food and its effects 

(ii) Autotroph: Which prepare their own food materials

   Students are encouraged to practice the free MCQ Questions for Class 7 Science Nutrition in Plants with Answers is accessible here. These MCQ Questions on Nutrition in Plants Class 7 with answers for a fast amendment of the Chapter in this way assisting you with upgrading subject knowledge. Every one of the MCQ Questions is chosen to structure the Class 7 Science entire syllabus. 

Solving the Nutrition in Plants Multiple Choice Questions of Class 7 Science MCQ can be of outrageous assistance as you will know about every one of the ideas. MCQ Questions for Class 7 Science with Answers are ready according to the Latest Exam Pattern. Students can solve this Nutrition in Plants Class 7 MCQ Questions with Answers and evaluate their preparation level. Start Practice MCQ Questions for Class 7 Science with Answers consistently and score more marks in tests.

Practice MCQ Questions for Class 7 Science

1. Which of the following is a nutrient?

(a) Protein
(b) Fat
(c) Vitamin
(d) All of these

2. Human beings can be categorised as

(a) heterotrophs
(b) autotrophs
(c) parasites
(d) saprotrophs

3. The food making process in plants is called as

(a) glycolysis
(b) photosynthesis
(c) photolysis
(d) chemosynthesis

4. Which part of the plant is called its food factory ?

(a) Fruits
(b) Seeds
(c) Leaves
(d) Flowers

5. Tiny pores present on the surface of leaves through which gaseous exchange occurs are called

(a) stomata
(b) guard cells
(c) food holes
(d) gas holes

6. What is the ultimate source of energy for all living organisms?

(a) Water energy
(b) Wind energy
(c) Solar energy
(d) Chemical energy

7. Green pigment present in the leaves is called

(a) haemoglobin
(b) globulin
(c) albumin
(d) chlorophyll

8. During photosynthesis

(а) solar energy is converted into chemical energy
(b) solar energy is converted into mechanical energy
(c) chemical energy is converted into mechanical energy
(d) bioenergy is converted into chemical energy

9. The raw materials for photosynthesis are

(а) CO₂
(b) CO₂, O₂, H₂
(c) N₂ water
(d) O₂ water

10. Which one of the following is a parasite?

(a) Lichen
(b) Cuscuta
(c) Pitcher plant
(d) Rhizobium

11. Which of the following class of organisms belongs to saprotrophs?

(a) Fungi
(b) Algae
(c) Lichens
(d) Bryophytes

12. Which of the following is an insectivorous plant?

(a) Pitcher plant
(b) Indian telegraph plant
(c) 4 ‘O’clock plant
(d) Cuscuta

13. The bacterium which provides nitrogen to the leguminous plants is 

(a) Rhizobium 
(b) Yeast
(c) Fungi  
(d) Lichens

14. ___________ gas is released by the plants in the process of Photosynthesis

(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen 
(d) Hydrogen

15. Which of the following is true about saprophytes?

(a) They trap insects to meet their nitrogen requirement.
(b) They live on decaying organic matter
(c) They share their food and shelter
(d) Saprophytes contain chlorophyll.

16. Iodine used to detect presence of starch. It gives starch

(a) blue-black colour
(b) red colour
(c) green colour
(d) colourless appearance

17. Which one of the following is an autotroph?

(a) Lichens
(b) Algae
(c) Fungus
(d) Cuscuta

18. Pitcher plant traps insects because it

(a) is a heterotroph
(b) grows in soils which lacks nitrogen
(c) does not have chlorophyll
(d) has a digestive system like human beings

19. Yeast, mushroom and bread-mould are

(a) autotrophic
(b) insectivorous
(c) saprophytic
(d) parasitic

20. When two organisms are good friends and live together and they benefit each other. Such an association of organisms is termed as

(a) saprophyte
(b) parasite
(c) autotroph
(d) symbiosis

21. The organisms that provides nutrients to parasitic organisms are known as …………………

(a) hosts
(b) parasite
(c) autotroph
(d) heterotrophs

22. Chlorophyll is present inside the

(a) Stroma
(b) Thylakoids
(c) hypodermis
(d) granna

23. Plants take carbon dioxide from the atmosphere mainly through their:

(a) Roots
(b) Stem
(c) Flowers
(d) Leaves

24. Which structure in a green plant controls the opening and closing of stomata?

(a) Guard cell
(b) Mesophyll
(c) Phloem
(d) Xylem

25. Most of the pulses are obtained from ____ plants ?

(a) Leguminous
(b) Cuscuta
(c) Maize
(d) Xylem

Answer:

1. Answer: (d) All of these

Explanation: Nutrient is a necessity for human body to survive, grow and reproduce. There are six major nutrients: Vitamins, Proteins, Fats, Water, Minerals and Carbohydrates.

2. Answer: (a) heterotrophs

Explanation: Humans are heterotrophs. They cannot synthesize their own food and hence, dependent on other sources (plants and animals) for nutrition.

3. Answer: (b) photosynthesis

Explanation: This process, called photosynthesis, produces food for the plant and release oxygen into the air.

4. Answer: (c) Leaves

Explanation: Leaves are the specialized structures for food production and hence, called food factories of the plants.

5. Answer: (a) stomata

Explanation: The pores through which leaves exchange gases is Stomata. They are the small openings present on the inner surface of the leaves. Stomata can be opened and closed. During night when no photosynthesis take place the plant breathe in oxygen and breathe out carbon dioxide through stomata.

6. Answer: (c) Solar energy

Explanation: Photosynthesis is a process used by plants and other organisms to convert light energy, into chemical energy. It takes place by two steps light reaction and dark reaction. Light reaction synthesizes ATP and NADPH₂ which is utilized for fixation of carbon dioxide into carbohydrates during the dark reaction. So, the sun is called as the ultimate source of energy for all living organisms. 

7. Answer: (d) chlorophyll

Explanation:: Chlorophyll is a pigment that gives plants their green color, and it helps plants create their own food through photosynthesis.

8. Answer: (а) solar energy is converted into chemical energy

Explanation: Plants use the process called photosynthesis which converts light energy (solar energy) into chemical energy. With the help photosynthesis, plants can make their own food from carbon dioxide and water in the existence of sunlight and chlorophyll. In this process, oxygen is released and glucose is produced. Glucose is either stored or converted into starch or it is used for respiration.

9. Answer: (а) CO₂

Explanation: The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf. Oxygen, a by-product of photosynthesis, and water vapor exit the leaf. 

10. Answer: (b) Cuscuta

Explanation: Nepenthes - It is an insectivorous plant.

Rhizobium - Rod shaped, aerobic, Nitrogen fixing bacterium.

Cuscuta - complete stem parasite.

Lichens - Special type of plants formed by the association of algae and fungi.

11. Answer: (a) Fungi

Explanation: Fungi are saprotrophs. Saprophytes are the organisms which grow and depend on dead and decaying matter.

12. Answer: (a) Pitcher plant

Explanation: A pitcher plant is a carnivorous plant (also called as Insectivorous plant). Carnivorous plants are plants that eat insects and other small animals. Carnivorous plants grow in soil that has little nitrogen. All living things must have nitrogen.

13. Answer: (a) Rhizobium 

Explanation: Leguminous plants contain Rhizobium bacteria in their root nodules. These bacteria have the ability to convert atmospheric nitrogen into a plant-usable form of nitrogen.

14. Answer: (a) Oxygen

Explanation: Oxygen is released during the process of photosynthesis.

15. Answer: (b) They live on decaying organic matter

Explanation: A saprophyte or saprotroph is an organism that gets its nutrition and energy from dead and decaying organic matter. These may be decaying parts of plants or animals. This means that saprophytes are heterotrophs. They are consumers in the food chain. This is a phenomenon observed in Fungi.

16. Answer: (a) blue-black colour

Explanation: Starch is the storage food reserve of a plant which is mainly present in the leaf. When its presence is tested by Iodine, It forms a blue- black color complex of starch Iodide. The iodine/starch complex has energy level spacings that are just so for absorbing visible light giving the complex its intense blue color.

17. Answer: (b) Algae

Explanation: Algae, along with plants and some bacteria and fungi, are autotrophs. Autotrophs are the producers in the food chain, meaning they create their own nutrients and energy. Kelp, like most autotrophs, creates energy through a process called photosynthesis.

18. Answer: (b) grows in soils which lacks nitrogen

Explanation: Pitcher plants trap insects in its modified trap-like organ to fulfill its requirements of Nitrogen and other nutrients as it grows in soil that lacks nitrogen. The dead insect inside its trap provides such nutrients required for normal functioning of the plant.

19. Answer: (c) saprophytic

Explanation: The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is saprophytic. These are all fungi.

20. Answer: (d) symbiosis

Explanation: When two organisms (such as fungus and algae) live as one and also help each other to survive, then this association is termed as symbiosis.

21. Answer: (a) hosts

Explanation: Parasitic nutrition or parasitism is a mode of heterotrophic nutrition where an organism (known as a parasite) lives on the body surface or inside the body of another living organism (known as a host). The parasite obtains nutrition directly from the body of the host. 

22. Answer: (b) Thylakoids

Explanation: Chlorophyll is a pigment necessary for photosynthesis where it helps plants to absorb energy from light. It is located in the thylakoid membranes of the chloroplasts.Thylakoids are membrane-bound compartments present inside chloroplasts.

23. Answer: (d) Leaves

Explanation: Atmospheric carbon dioxide enters plants mainly through the pores in the leaves called stomata during photosynthesis.

24. Answer: (a) Guard cell

Explanation: A pair of guard cells surrounds each stoma, and these cells control the opening and closing of the stomatal pore between them.

25. Answer: (a) Leguminous

Explanation: Leguminous plant are obtained most of the pulses.

Click here for Practice MCQ Questions for Nutrition in Plants Class 7

1. The aqueous solution of acid conduct electricity because the acid solution have H⁺ ions and the movement of these ions helps for the flow of electrical current through the solution.

Hence, the aqueous solution of an acid conduct electricity.

2. During dilution, more of acid dissociates into ions. Thus, concentration of [H₃O⁺] ions will increase on dilution.

3. Even on increasing [H₃O⁺] ions, the number of ions per unit volume decreases.
Therefore, pH will increase on dilution.

4. (a) CO₂ gas will evolve accompanied by brisk effervescence.
NaHCO₃(s) + HCl(aq) → NaCl (aq) + CO₂(g) + H₂O(aq)

(b) H₂ gas will evolve accompanied by brisk effervescence.

Zn(s) + 2HCl (aq) → ZnCl (aq) + H₂O(q)

Plants store the food that they produced by photosynthesis in the stem and roots. So, when goat ate away all the leaves of the plant, the plant fulfilled its requirement by the food stored in stem and roots.

Carbohydrates in wheat dough encourage growth of yeast and other saprophytic fungi which break down carbohydrates, and emit a foul smell.

Brine solution: An aqueous solution of common salt

1. Anode: A positive electrode.

2. Cathode: A negative electrode.

Pushkar near Ajmer.

Prithviraj Raso and Gita Govinda.

Spices, cotton, silk fabrics, perfumes and costly diamonds were exported.

Nagabhata and Bhoja.

c. The following glands is large sized at birth but reducies in size with agingThymus.

Uddandapura and Vikramashila.

Kshatriya dynasty such as Suryavamsha and Chandravamsha.

Prithviraj III was the well-known ruler among the Chauhans. He ruled from Delhi.

When Mohammad Ghori invaded India, Prithviraj opposed him He garnered the support of sceveral Rajput rulers against the common enemy. However, Jayachandra Kannauj refused to join him In the battle that took place Prithviraj defeated Mohammad Ghori. But he granted him mercy and let him off. Next year Mohammad Ghori challenged Prithviraj.

In the second battle that ensued Prithviraj was defeated and killed. Soon Delhi was captured by Mohammad Ghori. This paved the way for the establishment of the rule of the Sultans of Delhi. Prithviraj was known for his chivalry and valour. Chand Bardai’s Prithviraj Raso is an Hindi epic which expounds his prowess.

Kandariya Mahadeva temple at Khajuraho and Dilwara temple at Mount Abu are renowned temples. Gulabi Nagar, Pushkar, Hawa Mahal at Jaipur and huge palaces at Udampur are the fine specimens of palace and fort architecture.

Nalanda, Kashi, Vikramashila, Ujjayini.

The kingdom of Dharmapala.

He wrote ‘a noble king, the enemy of Arabs and commanded an efficient army

Rana Kumbha fought against the sultans of Delhi and defended his kingdom. He built 32 forts to safeguard his kingdom He erected a magnificient Vijaya sthambha at Chittorgarh. These are some of the notable achievements of Rana Kumbha.

Rana Khumba defeated the invasion of Delhi Sulthans, so he erected a Vijayasthamba at Chittorgarh.

Agaricus is a edible fungus.

a. Archaebacteria 

The term bacterium was coined by Ehrenberg.

The term animalcules was coined by Leeuwenhoek when he saw bacteria.

Compounds with the same molecular formula but different structural formulas are known as isomers.

The decomposition of alkanes on heating in the absence of oxygen is known as cracking.