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BIOLOGY MORPHOLOGY IN FLOWERING PLANTS QUIZ-9

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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. A horizontal underground stem is a
  •  Corm
  •  Phylloclade
  •  Rhizome
  •  Rhizoid
Solution
c) Rhizome is perennial, fleshy dorsiventral and horizontal underground stem growing beneath the surface of soil. These may be root stock rhizome, e.g., banana or straggling rhizome, e.g., lotus, ginger, etc.

Q2.Identify the type of inflorescence in the given diagrams (A and B)
  •  A-Racemose; B-Cymose
  •  A-Cymose; B-Racemose
  •  A-Cymose; B-Cymose
  •  A-Racemose; B-Racemose
Solution
a)In the given diagram, there is no flower at the tip of shoot. So, it have indefinitely growth. The flower borne laterally










Q3.  Bright colour of petals is due to presence of
  •  Chloroplast
  •  Anthocyanin
  •  Chromoplast
  •  Leucoplast
Solution
(b)Anthocyanin pigment present in vacuole is responsible for the bright colour of petal.

Q4. In the monocotyledon seeds, the endosperm is separated from the embryo by a distinct layer known as
  •  Testa
  •  Aleurone
  •  Tegmen
  •  Epithelium
Solution
d) The outermost layer of endosperm monocotyledonous seeds is called aleurone layer, which is rich in protein. The endosperm is separated from the embryo by a distinct layer called epithelium.

Q5.A flower which can be divided into equal vertical halves by more than one plane of division is
  •  Actinomorphic
  •  Zygomorphic
  •  Heteromorphic
  •  Cyclic
Solution
 (a)When the flowers are divisible into two equal halves by any radial plane, they are called actinomorphic.

Q6.Arrange the following plants in the ascending order based on the number of carpels they possess
I.Oenothera

II.Acacia melanoxylon

III.Squill

IV.Lettuce
  •  IV, III, I, II
  •  II, IV, III, I
  •  II, III, IV, I
  •  I, IV, III, II
Solution
(b)Acacia (family-Mimosaceae) has single carpel in ovary. Lettuce (Lactuca sativa, family-Asteraceae) has two carpels in ovary. Red squill (family-Liliaceae) has three carpels.

Q7.Water and minerals absorption from soil are the function of
  •   Root hair
  •  Root cap
  •  Stilt root
  •  Prop roots
Solution
(a)The root hairs increases the exposed surface of the roots of absorption of minerals and water from the soil. From the surface, the root hairs appear as white cottony fibres

Q8.Which of the following pairs of family’s posses pollinia?
  •  Orchidaceae and Apocynaceae
  •  Orchidaceae and Asclepiadaceae
  •  Asclepiadaceae and Mimosaceae
  •  Asclepiadaceae and Apocynaceae
Solution
b)The member of family-Orchidaceae and Asclepiadaceae possess pollinia.

Q9.The condition where filaments and anthers are fused throughout entire length is
  •  Synandrous
  •  Gynandrous
  •  Protandrous
  •  Syngenesious
Solution
(a)In synandrous condition of androecium, the anthers and their filaments are fused and form a group. In gynandrous condition, the stamens are fused with gynoecium. In protandrous condition, male flowers become mature before female in a bisexual flower. In syngenesious condition, anthers become fused but filaments remain free.

Q10. Treatment of seed at low temperature under moist conditions to break its dormancy is called
  •  Scarification
  •  Vernalisation
  •  Chelation
  •  Stratification
Solution
(d)Stratification involves the treatment of seed at low temperature (5-10℃) under sufficiently moist conditions to break its dormancy and to induce germination.

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