Morphology of Flowering Plants Quiz-17

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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. Identify A,B and C in the given diagram

  •  A-Plumule, B-Cotyledon, C-Radicle
  •  A- Radicle, B-Cotyledon, C-Plumule
  •  A-Cotyledon, B-Plumule, C-Radicle
  •  A-Cotyledon, B-Radicle, C-Plumule
A-Cotyledon B-Plumule, C-Radicle.

Seed coat The seed is covered by two coverings (layers). The outer layer is thick and tough called testa. The inner one is thin and whitish called tegmen. Hilum The concave side of seed is darker with a whitish elongated oval scar called hilum. Micropyle It is the small pore present at the end of hilum. It takes part in absorbing the water during seed germination. Cotyledons They are also called seed leaves. The two cotyledons are attached to embryo axis in between the plumule and radicle. Cotyledons are large, white, kidney-shaped. They store food

Q2.Smallest region of the root is
  •  Root cap
  •  Region of elongation
  •  Region of meristematic activity
  •  Region of maturation
Smallest region of root is meristematic or growing point. In this, the cells are very small and actively dividing, having dense cytoplasm.

Q3.   Two dry fruits (A & B) were observed. Both developed from unilocular ovaries of monocarpellary gynoecia. In fruit. A, pericarp and seed coat are free. It liberated the seeds only after the disintegration of the pericarp. Fruit ‘B’ dehisced dorsiventrally librating the seeds. In the following, the former in the pair represents ‘A’ and latter ‘B’. to which types of fruits ‘A’ and ‘B’ respectively belong?
  •  Achene and legume
  •  Nut and follicle
  •  Cypsella and siliqua
  •  Pyxidium and septicidal capsule
Achene develops from monocarpellary unilocular ovary but the fruit wall (pericarp) is not fused with seed coat, e.g., rose, Mirabilis, Clematis. Legume developed from monocarpellary, unilocular superior ovary with marginal placentation, e.g., family-Leguminosae.

Q4. Identify a pair of the following plants, which show modification of axillary buds into tendrils and hooks respectively. I.Hugonia II.Duranta III.Passiflora IV.Dioscorea
  •  I and II
  •  II and III
  •  III and I
  •  IV and I
Tendrils are green, thread-like sensitive structure, which can coil around the support and help the weak stem or shoot to climb up. Axillary buds are modified into tendrils in Passiflora and into hooks in Hugonia.

Q5. Drupes are called stony fruits because they have hard
  •  Epicarp and mesocarp
  •  Mesocarp
  •  Mesocarp and endocarp
  •  Endocarp
  Drupe is a fleshy, one or more chambered and one or more seeded fruit developing from a monocarpellary or syncarpous pistil, with pericarp differentiate into mesocarp (fleshy) and the endocarp (stony and hard). So, called as stone-fruit, e.g., mango, peach, coconut, etc.

Q6. The root system growing near the base of the radical in monocots is
  •  Haptera
  •  Anchoring roots
  •  Clinging roots
  •  Seminal roots
In monocots, the primary root denigrates early. Now, seminal roots arise from base of radicle. Fibrous root arise from base of radicle. Fibrous root system also arises from base of plumule and lower nodes.

Q7.Pericarp may be or can be differentiated into
  •  Epicarp
  •  Mesocarp
  •  Endocarp
  •  All of the above
Generally, the fruit consists of a wall or pericarp and seed. The pericarp may be dry or fleshy. When pericarp is thick and fleshy, it is differentiated into outer epicarp, the middle mesocarp and the inner endocarp

Q8.Which one of the following is a monocarpic tree?
  •  Borassus flabellifer
  •  Corypha umbraculifera
  •  Phoenix dactylifera
  •  Elaeis guineensis
A monocarpic tree is one, which flowers only once during its life cycle, e.g., Borassus flabellifer.

Q9.Identify the type of leaf modification in the given diagram (A to C)

  •  A-Support (spines), B-Protection (tendril), C-Storage (freshy leaves)
  •  A-Support (dendril), B-Protection (spine), C-Storage (freshy leaves)
  •  A-Protection (dendril), B-Support (spine), C-Storage (freshy leaves)
  •  A-Protection (spine), B-Support (dendril), C-Storage (freshy leaves)
Figure A represent leaf tendrillar, which help the plant in supporting around other plant for climbing. Figure B represent leaves modified into spines, which protect the plant and C is fleshy leaves, which store the sood.

Q10. Rauwolfia serpentina belongs to family
  •  Apocynaceae
  •  Solanaceae
  •  Liliaceae
  •  Fabaceae
Rauwolfia serpentina belongs to family-Apocynaceae. It is the important source of an alkaloid reserpine and other alkaloids like serpentine, serpentinine, rauwolfine, etc.

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Quiz 17 - Morphology of Flowering Plants
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