MORPHOLOGY IN FLOWERING PLANTS QUIZ-5

BIOLOGY MORPHOLOGY IN FLOWERING PLANTS QUIZ-5

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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. In floral formula, ‘K’ and ‘C’ stands for

•  K-Corolla, C-Calyx
•   K-Calyx, C-Corolla
•  K-Calyx, C-Calyx
•  K-Corolla, C-Corolla

Solution
b) K-Calyx, C-Corolla. Symbols used for floral formula Br- Bracteate EBr - Ebracteate Brl- Bracteolate EBrl – Ebracteolate ⨁ - Actinomorphic % - Zygomorphic C- Corolla, petals O - Male A- Androecium, stamens K – Calyx, sepal Std – Staminodes P – Parianth, tepal G – Gynoecium, Carpel

Q2.Select the correct statements.
I. From the region of elongation, some of the epidermal cells from root hairs.
II. Pneumatophores are seen in Rhizophora.
III. Adventitious roots are seen in the banyan tree.
IV. Maize and sugarcane have prop roots.

•  I and IV
•  I, III and IV
•  III and IV
•  II and III

Solution
(d) In some plants such as Rhizophora growing in swampy areas, many roots come out of the ground and grow vertically upwards. Such roots, called pneumatophore, help to get oxygen for respiration. In banyan tree, adventitious roots are hanging structure arising from nodes of horizontally growing branches. Such roots are called prop roots.

Q3.   A fibrous root system is excellent for

•  food storage
•  nitrogen fixation
•  absorbing water from deeper layer of soil
•  providing good anchorage for the plant

Solution
d) Fibrous root system (surface feeder tap root system) represents the tap root, which does not elongate deep into the soil and its fibrous secondary roots mostly horizontally to a greater extent near to the soil surface. This fibrous root system is excellent for providing good anchorage for the plant.

Q4. Which of the following is incorrect about the diagram A and B?

•  Tap roots of carrot, turnip and adventitious root of sweet potato get swollen and store food
•  Pneumatophores help to get oxygen for respiration
•  Pneumatophores are found in the plants that grows in sandy soil
•  A is underground roots, but B grows vertically upwards

Solution
c) Pneumatophores are found in the plant inhabitants of the marshy area, e.g., Rhizophora. These type of roots performs the function of respiration

Q5.Jowar belongs to family

•  Glumaceae
•  Gramineae/Poaceae
•  Asteraceae/Compositae
•  Malvaceae

Solution
 (b) Jowar, maize, sugarcane, wheat and rice belong to family-Gramineae or Poaceae.

Q6. 

•  Perfect flower
•   Bisexual flower
•  Either (a) or (b)
•  Imperfect flower

Solution
(b) Bisexual flower. Symbols used for floral formula Br- Bracteate EBr - Ebracteate Brl- Bracteolate EBrl – Ebracteolate ⨁ - Actinomorphic % - Zygomorphic C- Corolla, petals O - Male A- Androecium, stamens K – Calyx, sepal Std – Staminodes P – Parianth, tepal G – Gynoecium, Carpel

Q7.Most advanced fruit is

•  Cypsela
•  Caryopsis
•  Pome
•  Etaerio of drupe

Solution
d) According to Hutchinson’s general principles adopted for classification of flowering plants, aggregate fruits (etaerio of drupe) are more recent than single fruits.

Q8.Modified shoots wherein the shoot apical meristem changes to floral meristem is called

•  Flower
•  Inflorescence
•  Shoot buds
•  Both (a) and (c)

Solution
(a) Flower is a modified shoot, which performs the function of reproduction. The arrangement and distribution of flower over a plant is called inflorescence. Inflorescence is the name of modified shoot that is specialised to bear flower. The axis of inflorescence is called peduncle. A flattened peduncle is called receptacle

Q9.Which one of the following floral formula represents the mustard plant?

•  
  







•  
  







•  
  







•  
  

Solution
(d)

Q10. Flower is always solitary when

•  Shoot bud transforms into flower
•  Shoot tip transforms into flower
•  Lateral shoot transforms into flower
•  Horizontal shoot transforms into flower

Solution
(b) When shoot tip transforms into flower, it is always solitary