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April 2022

Home2022AprilPage 5

13. Young sieve tubes resemble

(a)      Mycoplasma                      (b)  Slime body (c)   Golgi body                         (d)  None of these Ans. b (29)

12. Mycotoplasm can be considered as a system consists of

Cytoplasm of sieve tube (b)  Vacuole of sieve tube (c)   Cytoplasm and vacuole for a system (d)          None of these...

11. Which of the following cells have more extensible walls

(a)  Vessels                               (b)  Tracheids (c)   Seive tubes                        (d)  Fibres Ans.  (d)      Fibres are sclerenchymatous. They have thick wall and provide...

31. The cohesive force of water is due to

(a)  O bonds                             (b)  H bonds (c)   OH bonds                           (d)  S bonds Ans. (b)      Salting of pickles and addition of...

30. Which tissues are removed when a plant is girdled

(a)  Xylem and pith                 (b)  Xylem and phloem (c)   Phloem to epidermis        (d)  Phloem to pith Ans. b (49)

8. Concentration of xylem sap is

(a)   More than phloem              (b)   Lesser than phloem (c)   Equal in both                       (d)   None of these Answer: (b)            In phloem,...

21. In trees, death of protoplasts is essential for a vital function such as

(a)  Stomatal movements (b)  Both water and food transport (c)   Water transport (d)  Food transport Ans. (a)      Dry gum or...

9. Which of the following cells may show turgidity

(a)   Xylem vessels                      (b)   Xylem tracheids (c)   Sieve tubes                           (d)   All the above Answer: C (11)

29. Which constitutes an apparent free space

(a)  All dead cells                     (b)  Intercellular spaces (c)   Cell wall spaces                 (d)  All together Ans. (b)      Meaning of diffusion is...

27. Which is not involved in entry of water through suberized roots

(a)  Lenticels, wounds and breaks around branch roots (b)  Roots and root hairs (c)   Root cap (d)  (a) and (c)...

26. The water conducting part of plant is also called

(a)  Hadrom                             (b)  Leptom (c)   Bast                                    (d)  All the above Ans. (b)      Because the concentration of cytoplasm of pollen grains...

25. In conifers the water uptake is not much efficient because

(a)  Such plants are acquired much of height (b)  They have poorly developed or entirely absent root hairs (c)   Their...

3. A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

  एक व्यक्ति 5 मिनट में 600 मीटर लंबी सड़क पार करता है। किमी प्रति घंटे में उसकी गति क्या...

24. Which portion of root absorbs both water and minerals

(a)  Terminal portion of roots        (b) Zone of cell elongation (c)   Zone of cell formation       (d)  Zone of cell differentiation...

23. Cell walls of root hairs for absorbing water must be

(a)  Hydrophobic                     (b)  Permeable (c)   Semipermeable                (d)  Impermeable Ans.  d (9)

22. Water infiltration will be slowest in

(a)  Black cotton soil                (b)  Sandy soil (c)   Red soil                              (d)  Ioamy soil Ans.   (b)          A variety of mineral elements...

10. Which of the events is more rapid

  (a)   Suction of water and minerals due to transpiration pull (b)   Cyclosis in cell cytoplasm (c)   Sugar transport in...

7.   Active transport of ions by the cell requires 

  (a)   High temperature               (b)   ATP (c)   Alkaline pH                           (d)   Salts Answer: (b)            Energy is usually provided by ATP...

6. Which components of xylem is living

(a)   Wood parenchyma             (b)   Tracheids (c)   Trachea                                 (d)   Wood fibre Answer: (a)       Wood (xylem) parenchyma are the living parenchymatous cells....

5. The living component of phloem tissue is

(a)   Sieve tube                             (b)   Companion cells (c)   Bast parenchyma                (d)   All the above Answer:      d)              In phloem, sieve...

4. When a bark of tissue is cut from stem, of which the vascular tissue is removed                    

  (a)   Xylem                                     (b)   Phloem (c)   Parenchyma                         (d)   None of these Answer: (b)       On removing the ring of bark, phloem...

3. Exchange of substances between individual cells and their environments takes place by

Exchange of substances between individual cells and their environments takes place by (a)   Osmosis                                 (b)   Diffusion (c)   Active transport                 ...

2. The conducting tissues of the plants are

The conducting tissues of the plants are (a)   Xylem                                     (b)   Phloem (c)   Xylem and phloem both   (d)   Sclerenchyma Answer: (c)...

1. The part of the plant where metabolism takes place is called

(a)   Aerial                                      (b)   Sub-aerial (c)   Underground                       (d)   All the above   Answer:  (d) Metabolism is of 2 types : (a)...

2. Which of the following trains is the faster?

  निम्नलिखित में से कौन सी ट्रेन तेज है? ਹੇਠ ਲਿਖਿਆਂ ਵਿਚੋਂ ਕਿਹੜੀ ਰੇਲ ਤੇਜ਼ ਹੈ। 25 m/sec 1500 m/min...

1. An athlete runs 200 meters race in 24 seconds. His speed is?

एक एथलीट 24 सेकंड में 200 मीटर की दौड़ता है। उसकी गति है? ਇਕ ਅਥਲੀਟ 24 ਸੈਕੰਡ ਵਿਚ 200 ਮੀਟਰ...

43. The age of a man is 4 times that of his son. Five years ago, the man was nine times as old as his son was at that time. The present age of the man is:

एक आदमी की उम्र उसके बेटे से 4 गुना है। पांच साल पहले, आदमी उस समय अपने बेटे के आयु...

42. The ratio of Laxmi’s age to the age of her mother is 3 : 11. The difference of their ages is 24 years. The ratio of their ages after 3 years will be:

लक्ष्मी की आयु और उसकी मां की आयु का अनुपात 3: 11. है, उनकी आयु का अंतर 24 वर्ष है।...

41. Ten years ago A was half of B in age. If the ratio of their present ages is 3 : 4, what is the sum of their present ages?

दस साल पहले A, B की उम्र का आधा था। यदि उनकी वर्तमान आयु का अनुपात 3: 4 है, तो...

40. A is as much younger to B as he is older to C. If the sum of the ages of B and C is 48 years, what is the present age of A?

  A, B से जितना छोटा है, वह C से उतना हे बड़ा है। B और C की आयु का...

39. One year ago the ratio of Varun and Veena’s ages was 4 : 5. One year hence the ratio of their ages will be 5 : 6. The present age of Veena is:

  एक वर्ष पहले वरुण और वीना की आयु का अनुपात 4: 5 था। एक वर्ष के बाद में उनकी...

38. Kamla got married 6 years ago. Today her age is 1(1/4) times her age at the time of marriage. He son’s age is 1/10 times her age. Her son’s age is:

कमला की शादी 6 साल पहले हुई थी। आज उसकी उम्र शादी के समय उसकी उम्र से 1 (1/4) गुना...

36. 10 years ago, Mona’s mother was 4 times older than her daughter. After 10 years, the mother will be twice older than the daughter. Mona’s present age is:

10 साल पहले, मोना की मां अपनी बेटी से 4 गुना बड़ी थी। 10 साल बाद, माँ बेटी से दो...

37. Three years ago, the average age of A and B was 18 years. With C joining them, the average becomes 22 years. How old is C now?

तीन साल पहले, ए और बी की औसत आयु 18 वर्ष थी। C के उनके साथ जुड़ने से औसत 22...

35. The sum of the ages of a father and son is 45 years. Five years ago the product of their ages was 4 times the father’s age at that time. The present ages of the father and son respectively are:

एक पिता और पुत्र की आयु का योग 45 वर्ष है। पांच साल पहले उनकी उम्र का गुणनफल उस समय...

34. Ashok’s age is (1/6) th of his father’s age. The father’s age will be twice of Kamal’s age after 10 years. If Kamal’s eighth birthday was celebrated 2 years before, what is Ashok’s present age?

  आशोक की उम्र उसके पिता की उम्र का (1/6) है। पिता की आयु 10 वर्ष के बाद कमल की...

33. The ages of Sachin and Jatin are in the ratio 8 : 11. After 10 years the ratio of their ages will be 13 : 16. What is the difference in their ages?

सचिन और जतिन की उम्र 8: 11. के अनुपात में है। 10 साल बाद उनकी उम्र का अनुपात 13: 16...

32. The ratio of present ages of two persons A and B is 5 : 9 respectively. Eight years ago the ratio of their ages as 1 : 2. What would be the respective ratio of their ages after eight years?

दो व्यक्तियों A और B की वर्तमान आयु का अनुपात क्रमशः 5: 9 है। आठ साल पहले उनकी उम्र का...

31. At present Satish is four times Madhur’s age. After eight years Satish will be 2.5 times Madhur’s age then. How many times will Satish’s age be  in another eight years time with respect of Madhur’s age then?

वर्तमान में सतीश मधुर की उम्र का चार गुना है। आठ साल बाद सतीश तब मधुर की उम्र का 2.5...

30. The ratio in the present ages of Rakesh and Jayant is 3: 2. Four years ago Rakesh’s age was more than Jayant’s age by 6 years. What is the present age of Jayant?  

राकेश और जयंत की वर्तमान आयु में अनुपात 3: 2 है। चार साल पहले राकेश की आयु जयंत की आयु...

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