Home
Class 12
BIOLOGY
The main function of stem are that I i...

The main function of stem are that
I it bears and supports foliage, flowers and fruits
II it stores food in its aerenchyma cells
III It adds new cells tissues and organs every year to keep continuing the functioning of the plant for long periods of time
IV Leaf like flattened modified stems are called the thallus
Choose the correct option

A

I and III

B

I and II

C

II and IV

D

only IV

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MORPHOLOGY OF FLOWERING PLANTS

    ARIHANT NEET|Exercise Chapter exercises C( Medical entrances gallery ( collection of questions Asked in NEET & Various Medical Entrance Exams ))|140 Videos

  • MORPHOLOGY OF FLOWERING PLANTS

    ARIHANT NEET|Exercise Chapter exercises A (Taking it together (Assorted Questions of the Chapter for Advanced Level Practice))|274 Videos

  • MONERA

    ARIHANT NEET|Exercise Chapter exercises Medical entrances gallery (Collection of questions asked in NEET & various medical entrance exams)|47 Videos

  • MOVEMENT AND LOCOMOTION

    ARIHANT NEET|Exercise Medical entrances gallary ( Collection of question asked in NEET & various Medical Entrance Exam )|54 Videos

Similar Questions

Explore conceptually related problems

Leaf like structure formed by the stem modificatin is called phylloclade which I is flat & succulent II can bear leaves, branches & flowers etc III an axillary bud present in the axil of a phyllode IV usually does not store water and food Choose the correct option

Which of the statements are correct? I.Occurence of different types of tissues ,organs and organ system results in division of labour II.A new cell always develops by the division of a pre existing cells III.Cells are totipotent IV.Cell is the smallest unit,capable of independent existence and performing the essential functions of life. The correct option is

Water and dissolved minerals get into the root hair of a plant by a process called A and enter the conducting tissue B. The C helps the water and dissolved minerals to move up through the tissue B in roots and stem, and reach the leaves of a plant. In the leaves food is made by a process D. This food is then transported to all the parts of a plant through tissue E. The process of distributing food made in the leaves to all the parts of the plant is called F. (a) What are (i) A (ii) B (iii) C (iv) E, and (iv) F ? (b) Which tissue is made up of living cells : B or E ? (c) Name one substance (other than oxygen) which is transported by tissue A in the human body. (d) Which two components of tissue A are the cells without nucleus ? (e) Name any two organisms (animals) which do not have liquid like A in their body.

I. Association areas, which are mainly motor in function, are responsible for functions like intersensory associations, memory, and communication. II. Midbrain and hindbrain forms the brain stem. III. The ciliary body itself continues forward to form a pigmented and opaque structure- iris. IV. The membranous labyrinth is filled with a fluid called endolymph. How many of the given statements are correct?

Read the passage given below and answer the question: Adenosine triphosphate (ATP) is the energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes. ATP is a nucleotide that consists of three main structures: the nitrogenous base, adenine, the sugar, ribose, and a chain of three phosphate groups bound to ribose. The phosphate tail of ATP is the actual power source which the cell taps. Available energy is contained in the bonds between the phosphates and is released when they are broken, which occurs through the addition of a water molecule (a process called hydrolysis). Usually only the outer phosphate is removed from ATP to yield energy, when this occurs ATP is converted to adenosine diphosphate (ADP), the form of the nucleotide having only two phosphates. The importance of ATP (adenosine triphosphate) as the main source of chemical energy in living matter and its involvement in cellular processes has long been recognized. The primary mechanism whereby higher organisms, including humans, generate ATP is through mitochondrial oxidative phosphorylation. For the majority of organs, the main metabolic fuel is glucose, which in the presence of oxygen undergoes complete combustion to CO_2 and H_2O : C_6H_(12)O_6 + 6O_2 rarr 6CO_2 + 6H_2O + "energy" The free energy (AG) liberated in this exergonic (AG is negative) reaction is partially trapped as ATP in two consecutive processes: glycolysis (cytosol) and oxidative phosphorylation (mitochondria). The first produces 2 mol of ATP per mol of glucose, and the second 36 mol of ATP per mol of glucose. Thus, oxidative phosphorylation yields 17-18 times as much useful energy in the form of ATP as can be obtained from the same amount of glucose by glycolysis alone. The efficiency of glucose metabolism is the ratio of amount of energy produced when 1 mol of glucose oxidised in cell to the enthalpy of combustion of glucose. The energy lost in the process is in the form of heat. This heat is responsible for keeping us warm. (source: Erecińska, M., & Silver, 1. A. (1989). ATP and Brain Function. Journal of Cerebral Blood Flow & Metabolism, 9(1), 2-19. "https://doi.org/10.1038/jcbfm." 1989.2 and "https://www.britannica.com/science/adenosine-triphosphate" ) What is the efficiency of glucose metabolism if 1 mole of glucose gives 38ATP energy?(Given: The enthalpy of combustion of glucose is 686 kcal, 1ATP= 7.3kcal)

Read the passage given below and answer the question: Adenosine triphosphate (ATP) is the energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes. ATP is a nucleotide that consists of three main structures: the nitrogenous base, adenine, the sugar, ribose, and a chain of three phosphate groups bound to ribose. The phosphate tail of ATP is the actual power source which the cell taps. Available energy is contained in the bonds between the phosphates and is released when they are broken, which occurs through the addition of a water molecule (a process called hydrolysis). Usually only the outer phosphate is removed from ATP to yield energy, when this occurs ATP is converted to adenosine diphosphate (ADP), the form of the nucleotide having only two phosphates. The importance of ATP (adenosine triphosphate) as the main source of chemical energy in living matter and its involvement in cellular processes has long been recognized. The primary mechanism whereby higher organisms, including humans, generate ATP is through mitochondrial oxidative phosphorylation. For the majority of organs, the main metabolic fuel is glucose, which in the presence of oxygen undergoes complete combustion to CO_2 and H_2O : C_6H_(12)O_6 + 6O_2 rarr 6CO_2 + 6H_2O + "energy" The free energy (AG) liberated in this exergonic (AG is negative) reaction is partially trapped as ATP in two consecutive processes: glycolysis (cytosol) and oxidative phosphorylation (mitochondria). The first produces 2 mol of ATP per mol of glucose, and the second 36 mol of ATP per mol of glucose. Thus, oxidative phosphorylation yields 17-18 times as much useful energy in the form of ATP as can be obtained from the same amount of glucose by glycolysis alone. The efficiency of glucose metabolism is the ratio of amount of energy produced when 1 mol of glucose oxidised in cell to the enthalpy of combustion of glucose. The energy lost in the process is in the form of heat. This heat is responsible for keeping us warm. (source: Erecińska, M., & Silver, 1. A. (1989). ATP and Brain Function. Journal of Cerebral Blood Flow & Metabolism, 9(1), 2-19. "https://doi.org/10.1038/jcbfm." 1989.2 and "https://www.britannica.com/science/adenosine-triphosphate" ) Nearly 95% of the energy released during cellular respiration is due to:

ARIHANT NEET-MORPHOLOGY OF FLOWERING PLANTS -Chapter exercises B ( Medical entrance special format questions )
  1. Tap root system I is always underground II is produced by the rad...

    Text Solution

    |

  2. Repiratory roots I are assimilatory roots which develop in plants gr...

    Text Solution

    |

  3. The main function of stem are that I it bears and supports foliage, ...

    Text Solution

    |

  4. Leaf like structure formed by the stem modificatin is called phyllocla...

    Text Solution

    |

  5. The compound umbel type of inflorescence is found in I Coriandrum sa...

    Text Solution

    |

  6. Spadix is a type of inflorescence Read the following statement regardi...

    Text Solution

    |

  7. Valvate type of aestivtion of calyx is found in I solanum II iberi...

    Text Solution

    |

  8. Flowers of which of the following plant sets are zygomophic ? I adho...

    Text Solution

    |

  9. Which of the following is / are correct ? I in dry fruits the perica...

    Text Solution

    |

  10. In which of the following fruits the edible parts are endosperm and em...

    Text Solution

    |

  11. Achenial fruits are simple dry single seeded indehiscednt fruits which...

    Text Solution

    |

  12. Read the given below statements I Amphisarca is a multilocular many ...

    Text Solution

    |

  13. The plants in which only the pericarp and placenta of fruit are edible...

    Text Solution

    |

  14. The exaples of dictyledonous seeds are cicer II brassica III lyc...

    Text Solution

    |

  15. Causes of seed dormancy are I impermeability of seed coats II imma...

    Text Solution

    |

  16. Natural breaking of seed dormancy occurs through I leaching of inhib...

    Text Solution

    |

  17. Anemochory or wind dispersal of seeds is found in I Acer II Calotr...

    Text Solution

    |

  18. Read the given statements I fruits such as clematis have hard hair a...

    Text Solution

    |

  19. Consider the given statement regarding roots and choose the option hav...

    Text Solution

    |

  20. Identify the correct order 1. Mineral absorption zone. 2. Meristem...

    Text Solution

    |