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BIOLOGY MORPHOLOGY IN FLOWERING PLANTS QUIZ-10

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NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced. .

Q1. Which one of the following conditions is seen in the roots of a plant having submerged assimilatory roots and spongy
petioles?
  •  Triarch
  •  Monarch
  •  Tetrarch
  •  Diarch
Solution
(b) Trapa natans is a hydrophyte. It has monarch (one xylem strand) condition in slender root and spongy petioles.

Q2.Which of the following pairs is not correct?
  •  Corymb-Candytuft
  •  Capitulum-Sunflower
  •  Catkin-Mulberry
  •  Raceme-Wheat
Solution
(d) Wheat has the inflorescence called compound spikelet.
Q3.  Prop roots are the modification for
  •  Support
  •  Respiration
  •  Storage food
  •  Increasing mass
Solution
(a)Prop or Pillar Roots They are thick pillar-like adventitious root, which grow from and support heavy horizontal branches of banyan tree. Initially, these roots are areal and hygroscopic. As the root reaches to the soil, they become thick and pillar-like

Q4. Which of the following is a correct statement?
  •  Orchid has palmate fleshy roots
  •  Pandanus has stilt roots
  •  Sweet potato has root tubers
  •  All of the above
Solution
(d) The orchids have epiphytic roots, which are covered by a hygroscopic velamen tissue. The rootlets of sweet potato are irregularly swollen they are described as tuberous. The stilt roots are adventitious roots arising from the nodes of the mina stem to provide more support to the plant, e.g., Pandanus, Rhizophora.

Q5.Stem tendrils are developed from the….. which are slender and spirally coiled
  •  Terminal buds
  •  Auxillary buds
  •  Both (a) and (b)
  •  Shoot tip
Solution
 (b) Sem tendrils which develops from axillary buds are slender and spirally coiled and helps the plant to climb such as in gourds (cucumber, pumpkins, watermelon) and grapevines

Q6.Tetradynamous condition is found in
  •  Asteraceae
  •  Malvaceae
  •  Papilionatae
  •  Brassicaceae
Solution
(d) In tetradynamous condition out of six stamens, four are long and two are short, e.g., Brassicaceae (Cruciferae).

Q7.Vivipary is seen in
  •  Mangroves
  •  Xerophytes
  •  Hydrophytes
  •  Mesophytes
Solution
(a) Vivipary (germination of seed inside the fruit) is an important character of mangrove plants.

Q8.In unilocular ovary with a single ovule, the placentation is
  •  Marginal
  •  Basal
  •  Free central
  •  Axile
Solution
(b) In basal placentation, ovary is bicarpellary syncarpous and unilocular, and a single ovule is borne at t5he base of ovary, e.g., marigold.

Q9.In which of the following, parthenocarpy makes no sense?
  •  Banana
  •  Orange
  •  Lemon
  •  Pomegranate
Solution
(d) Parthenocarpy (Gr. parthenos=virgin (false); karpos=fruit) is the production and development of seedless fruits without fertilization of an egg in the ovary. Presently, a number of fruit varieties have been altered genetically to undergo parthenocarpic development besides, hormonal treatment has been also found to induce parthenocarpy in certain plants. In banana, orange, lemon, guava, etc, seedless fruits are useful as there is no use of seeds in eating them. But in pomegranate, it is the seed coat of the seed, which is fleshy and edible. So, fruit is useless without the seeds in it and thus, parthenocarpy makes no sense in pomegranate.

Q10. Underground stems of potato, ginger, turmeric, Zaminkand, Colocasia are the examples of modified stem for
  •  Conduction of minerals
  •  Conduction of water
  •  Both (a) and (b)
  •  Storage of food
Solution
d) The stem may not always to be typically like what they are expected to be. They are modified to perform different functions. Underground stem of potato, ginger, turmeric, zaminkand, Colocasia are modified for storing food in them. They also acts as organs of penetration to tide over the conditions unfavaourable for growth

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