BIOLOGY MORPHOLOGY IN FLOWERING PLANTS QUIZ-8
Dear Readers,
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.
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Q1. Colchicine
I. is obtained from Colchium autumnale II. is a cytokinesis inhibitor
III. induce polyploidy IV. is obtained from Fabaceae family
V. Floral formula =⨁
P(3+3)A(3+3) G_3
Which are correct statement?
I. is obtained from Colchium autumnale II. is a cytokinesis inhibitor
III. induce polyploidy IV. is obtained from Fabaceae family
V. Floral formula =⨁
Solution
a)Colchicine is obtained from the Colchicum autumnale which belongs to the family – Liliaceae or commonly called ‘Lily Family’. This chemical induces polyploidy by inhibiting cytokinesis
a)Colchicine is obtained from the Colchicum autumnale which belongs to the family – Liliaceae or commonly called ‘Lily Family’. This chemical induces polyploidy by inhibiting cytokinesis
Q2.Starch is insoluble in water, yet it is accumulated in large quantities in potato tuber because
Solution
a)Starch is insoluble in water but it is useful for storage. During night, it is stored in various storage organs but it is mainly found in underground stems (or tubers), in the seeds of cereals (e.g., wheat, maize, rice, etc) and in fleshy roots.
a)Starch is insoluble in water but it is useful for storage. During night, it is stored in various storage organs but it is mainly found in underground stems (or tubers), in the seeds of cereals (e.g., wheat, maize, rice, etc) and in fleshy roots.
Q3. Endosperm is consumed by developing embryo in the seed of
Solution
(c)In pea seed, endosperm is consumed by developing embryo.
(c)In pea seed, endosperm is consumed by developing embryo.
Q4. Angiosperms differ from gymnosperms in
Solution
b)Fruit formation is the characteristic feature of angiosperms. There is no fruit formation in gymnosperms because there is no ovary
b)Fruit formation is the characteristic feature of angiosperms. There is no fruit formation in gymnosperms because there is no ovary
Q5.Hesperidium of orange is a modification of
Solution
(a)Hesperidium is a modification of berry
(a)Hesperidium is a modification of berry
Q6.Which one of the following statements is correct with reference to Amentum?
Solution
(c) Amentum is a dicotyledonous plant. It contains unisexual flowers and the flowers are opened in acropetal manner. It also contains a weak peduncle.
(c) Amentum is a dicotyledonous plant. It contains unisexual flowers and the flowers are opened in acropetal manner. It also contains a weak peduncle.
Q7.The economically important plant of Malvaceae is
Solution
(b)Gossypium hirsutum (cotton), Hibiscus cannabis (kenaf, patsan) and Abelmoschus esculentus (lady finger, okra, ‘bhindi’) all are the economically useful plants of ‘Malvaceae’.
(b)Gossypium hirsutum (cotton), Hibiscus cannabis (kenaf, patsan) and Abelmoschus esculentus (lady finger, okra, ‘bhindi’) all are the economically useful plants of ‘Malvaceae’.
Q8.Which of these is an example for zygomorphic flower with imbricate aestivation?
Solution
d)Cassia belongs to family-Fabaceae. The flower is bracteates, pedicellate, hermapharodite, complete, zygomorphic and hypogynous. Descending imbricate aestivation is found.
d)Cassia belongs to family-Fabaceae. The flower is bracteates, pedicellate, hermapharodite, complete, zygomorphic and hypogynous. Descending imbricate aestivation is found.
Q9.United sepals are called …A… .
Free sepals are called …B… . Here, A and B refers to
Free sepals are called …B… . Here, A and B refers to
Solution
(b)The calyx is the outermost whorl of the flower and the members are called sepals. Generally, sepals are green, leaf like and protect the flower in the bud stage. The calyx may be gamosepalous (sepals united) or polysepalous (sepals free)
(b)The calyx is the outermost whorl of the flower and the members are called sepals. Generally, sepals are green, leaf like and protect the flower in the bud stage. The calyx may be gamosepalous (sepals united) or polysepalous (sepals free)
Q10. Identify the position of gynoecium in the given diagrams A to D
Solution
(C) (i) Hypogynous flower Gynoecium occupies its highest position. This is called the superior ovary e.g., mustard, China rose, brinjal
(ii) Perigynous flower Gynoecium is situated in the centre and other parts are situated at the same level. This condition is called half inferior ovary. e.g., plum, rose, peach
(iii) Epigynous flower The other part lies above the ovary. This condition is called the inferior ovary
e.g., of epigynous ovary cucumber, sunflower
(C) (i) Hypogynous flower Gynoecium occupies its highest position. This is called the superior ovary e.g., mustard, China rose, brinjal
