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  • 4 answers

Diksha Laniya🐥 5 years ago (10085318)

Hello gaurav seth and priyanka raj

Diksha Laniya🐥 5 years ago (10085318)

Hello gaurav sath

Diksha Laniya🐥 5 years ago (10085318)

Answer: 1.) Simple subsistence farming is ...

Gaurav Seth 5 years ago (2898529)

Primitive Subsistence Intensive Subsistence

This type of farming is done on very small patches of land.

The land holdings are comparatively bigger.

Primitive tools like a hoe, dow, digging sticks are used for cultivation.

Modern agricultural inputs like chemical fertilizers, HYV seeds, machines are used wherever suitable

This agriculture is dependent on rainfall and the natural fertility of the soil.

Means of irrigation like tube wells, canals are used. Soil fertility is also increased by the use of fertilizers.
Family members provide labour. Labourers are hired. 
Land productivity in this type of agriculture is low. Land productivity in this type of agriculture is high as it is meant for commercial purpose.
  • 0 answers
  • 2 answers

Kripa Daga 5 years ago (10161867)

1/(√7-√5) 1(√7+√5) /(√7-√5) (√7+√5) (√7+√5) /(√7)²-(√5) ² (√7+√5) /7-5 (√7+√5) /2

Vinod Kumar 5 years ago (10123275)

√7+√5/2
  • 1 answers

Tanmay Verma 5 years ago (10162453)

Question to likh be
  • 1 answers

Gaurav Seth 5 years ago (2898529)

 

Gene expression is the process by which the instructions present in our DNA are converted into a functional product, such as a protein. This process is a tightly coordinated process which allows a cell to respond to its changing environment.

  • 2 answers

Diksha Laniya🐥 5 years ago (10085318)

Answer: (a) The British described the tribal people as wild and savage. ... (c) The tribal chiefs got land titles in central India under the British land settlements. (d) Tribals went to work in the tea plantations of Assam and the coal mines in Bihar.

Yogita Ingle 5 years ago (2577571)

The British described the tribal people as wild and savage.

http://mycbseguide.com/examin8/
  • 0 answers
  • 1 answers

Lovely Sharma 5 years ago (10152307)

(a) propanamine , (b) but-2-ene, (c) pentanal, (d) Methoxy propane, (e) 1-Nitro propane, (f) butane, (g) propanal, (h) butanoic acid, (I) ethanamine, (j) Methoxy ethane, (k) Methanol, (l) prop-1-ene, (m) but-1-yne, (n) ethanoic acid, (o) butanol, (p) pent-2-ene In (m) ,I think there may be a triple bond to fulfill c valency , and in (o) the functional group was not clear so I solved it considering alcohol group
  • 3 answers

Vansh Chauhan 5 years ago (9408084)

Gobar

Pranathi Garimella 5 years ago (9370156)

Nutrition in plants

Prem Mishra 5 years ago (10084282)

CBSE Class–VII Science NCERT Solutions CHAPTER-1 NUTRITION IN PLANTS Question 1. Why do organisms need to take food? Answer: Organism needs food to (i) Get energy to do work. (ii) Build body (iii) Repair damage in the body (iv) Maintain the functions of the body Question 2. Distinguish between a parasite and saprophyte. Answer: Parasite Saprotroph The organism that grows on the body of another organism and derives nutrients from it is known as a parasite  The organism that obtains nutrients from the dead or decaying organic matter is called saprotroph. They directly feed on living organisms for their nutrition.They feed on dead and decaying organism.They take the readymade food from the host.They take the digested and decayed food.Examples:­ Cuscuta and orchidsExamples:­ Fungi and some bacteria. Question 3. How would you test the presence of starch in leaves? Answer: Steps to test the presence of starch in leaves : Step 1: A fresh leaf is taken. Step 2: The leaf is boiled in water for few minutes to kill the cells in the leaf. Step 3: Now, dip this leaf in iodine solution. Step 4: The color of the leaf will changes into blue black color when iodine is added to it which shows the presence of starch in it.  Question 4. Give the brief description of the process of synthesis of food in green plants. Answer: Photosynthesis is the process synthesis of food in the plants with the help of chlorophyll and carbon dioxide in the presence of sunlight. Water and minerals present in the soil are absorbed by the roots and transported to the leaves by the vessels. Carbon dioxide from air is taken through stomata present in leaves. Leaves are the food factories of the plants which capture the energy of the sunlight with the help of chlorophyll. This energy is used to synthesize food from carbon dioxide and water.   Question 5. Show with the help of a sketch that the plants are ultimate source of food. Answer:  Question 6. Fill in the blanks: (a) Green plants are called ----------- since they synthesise their own food. (b) The food synthesised by the plants is stored as ----------------. (c) In photosynthesis solar energy is captured by the pigment called ------------. (d) During photosynthesis plants take in ------------- and release --------------. Answer: Fill in the blanks: (a) Green plants are called autotrophs since they synthesise their own food. (b) The food synthesised by the plants is stored as starch. (c) In photosynthesis solar energy is captured by the pigment called chlorophyll. (d) During photosynthesis plants take in carbon dioxide and release oxygen. Question 7. Name the following: (a) A parasitic plant with yellow, slender and tubular stem. (b) A plant that has both autotrophic and heterotrophic mode of nutrition. (c) The pores through which leaves exchange gases. Answer: (i) Cuscuta (ii) Insectivorous plants (iii) Stomata Question 8. Tick the correct answer: (a) Amarbel is an example of : (i) Autotroph (ii) Parasite (iii) Saprophyte (iv) Host (b) The plant which traps and feeds on insects is: (i) Cuscuta (ii) China rose (iii) Pitcher plant (iv) Rose Answer:(a) (ii) parasite   (b) (iii) Pitcher plant Question 9. Match the item in given column I with those in column II. Column I Column II Chlorophyll Bacteria Nitrogen Heterotrophs Amarbel Pitcher plant Animals Leaf Insects Parasite Answer: Column I Column II Chlorophyll Leaf Nitrogen Bacteria Amarbel Parasite Animals Heterotrophs Insects Pitcher plant Question 10. Mark “T” if the statement is true and “F” if it is false: (i) Carbon dioxide is released during photosynthesis. (T/F) (ii) Plants which synthesis their food themselves are called saprotrophs. (T/F) (iii) The product of photosynthesis is not a protein. (T/F) (iv) Solar energy is converted into chemical energy during photosynthesis. (T/F) Answer: (i) F  (ii) F   (iii) T  (iv) T Question 11. Choose the correct option from the following: Which part of plant takes in carbon dioxide from the air for photosynthesis? (i) Root hair (ii) Stomata (iii) Leaf veins (iv) Sepals Answer: (ii) Stomata Question 12. Choose the correct option from the following: Plants take carbon dioxide from the atmosphere mainly through their: (i) Roots (ii) Stem (iii) Flowers (iv) Leaves Answer: (iv) leaves
  • 1 answers

Gaurav Seth 5 years ago (2898529)

Perimeter of square 1=12cm

a1= side of square 1 = 12/4=3cm

perimeter of square 2 = 16cm

a2=side of square 2 = 16/4=4cm

The sum of the qareas of these two squares = 

=

=9+16=25

the area of the larger square, is therefore,25

the side of the larger square=√25=5cm

The perimeter of the larger square=4*5=20cm 

∴The perimeter of the required square is 20cm

  • 0 answers
  • 5 answers

Simran Swag 5 years ago (10207380)

66,111,990

Charu Pathak 5 years ago (10172193)

66,111,990

Charu Pathak 5 years ago (10172193)

Thanks

Shweta Sonawane 5 years ago (10160864)

Answer of 1.st question is -66, 111,990.

Koutilya Sharma 5 years ago (10164629)

2+345775445
  • 1 answers

Meghna Thapar 5 years ago (6237)

<a data-ved="2ahUKEwjE0O3p3a7tAhWHzjgGHex_BCMQ9QF6BAgJEAE" href="https://www.google.com/search?q=Amplitude,+time+period+and+frequency+of+a+vibration&rlz=1C1CHBD_enIN888IN888&sxsrf=ALeKk01xggvfSpEuXhDQwC0YqnHLVNxOCA:1606892711021&tbm=isch&source=iu&ictx=1&fir=GFrZD510ViQLBM%252CUhUDtE43ZIx6GM%252C_&vet=1&usg=AI4_-kRXn2nSILdlkNWdsWiH5ERk12zTWw&sa=X&ved=2ahUKEwjE0O3p3a7tAhWHzjgGHex_BCMQ9QF6BAgJEAE#imgrc=GFrZD510ViQLBM"></a>

Amplitude—maximum displacement from the equilibrium position of an object oscillating around such equilibrium position. Frequency—number of events per unit of time. Period—time it takes to complete one oscillation. The number of cycles that a vibrating object completes in one second is called frequency. The unit of frequency is hertz (Hz). One hertz equals one cycle per second.

  • 2 answers

Simran Swag 5 years ago (10207380)

2555-5553

Charu Pathak 5 years ago (10172193)

2555-5553
  • 2 answers

Rohan Yadav 5 years ago (10267712)

Mdel of the earth

Kirti Tiwari 5 years ago (9478668)

Evs
  • 0 answers
  • 1 answers

Yogita Ingle 5 years ago (2577571)

Cut throat competition and consumerism are the banes of the fast-paced modern life born out of advancement in science and technology. Everyone is busy and focused to secure a career and bright future for themselves. In this business, everyone seems to have forgotten the basic morality and ethics.  

It must be kept in mind, if are means are wrong, our ends can never be right. Competition and consumerism can never bring anyone one is seeking. The most valuable treasure in this world is peace, health, and happiness. They can be had only through righteousness. Competition and consumerism are antithesis peace, health, and happiness.  

So, the most ideal approach to live a great life should be doing one’s best without compromising with morals and ethics. One must never do mean things, think mean thoughts, and speak mean words of any type. The outcome will always be grand if one’s thoughts, words, and acts are grand.    

 

  • 1 answers

Saurabh Kesarwani 5 years ago (8606097)

MOLARITY=NO.OF MOLES/VOLUME M=0.32/3.4 M=0.094 moles/lit.
  • 1 answers

Yogita Ingle 5 years ago (2577571)

Here,no. Of moles of water in 54 g = given weight/molecular weight

=54/18

=3

So, no. Of molecules=avogadro no. ×no. Of moles

=(6.022×1023)×3

= 18.066 ×1023 molecules

  • 1 answers

Yogita Ingle 5 years ago (2577571)

On meeting a mynah, Golu asks what does a crocodile eats for dinner. Most noteworthy, Golu had no experience of a crocodile. He had never before seen a crocodile and had no idea about its diet. Consequently, Golu began to grow more and more curious regarding the crocodile and its eating habit. In order to search for the answer, Golu decided to visit the great Limpopo river due to the advice given by the mynah.

  • 1 answers

Yogita Ingle 5 years ago (2577571)

refractive index = sin i / sin r
                          = sin45/sin30
                          = (1/√2)/(1/2)
                          = 2/( √2)
                           =  √2

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