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Plant Kingdom 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.  In selaginella trabeculae are the modification of
  •   Epidermal cells
  •   Cortical cells
  •   Endodermal cells
  •   Pericycle cells
Solution
(c) The stem of shows distelic condition. Some air spaces develop between the endodermal cells isolating two steles from the cortex. The endodermal cells elongate to form trabeculae connecting the two tissues. The stele remains suspended by this unicelled (rarely multicelled) trabeculae.

Q2. Choose the correct statements about protonema
  •   Juvenile stage of moss is protonema
  •   It consists of slender, green, branching system of filaments
  •   Develops directly from a spore
  •   All of the above
Solution
(d) Juvenile stage of moss is protonema, which develops directly from a spore. It is a creeping, green, slender, branched and frequently filamentous stage

Q3.   In brown algae, food is stored in the form of
  •   Mannitol
  •   Laminarin starch
  •   Both (a) and (b)
  •   Algin
Solution
In brown algae food is stored as complex carbohydrates, which may be in the form of laminarin or mannitol

Q4.  Which green alga shows heterotrichous habit and may have given rise to terrestrial (land) habit?
  •   chlamydomonous
  •   fritschiella
  •   vaucheria
  •   ulotherix
Solution
Heterotrichous habit having prostrate and erect system by a filamentous thallus is must for evolution of terrestrial plants. It is found in green algae like other examples are

Q5. Artificial system of classification was given by …A… and based on …B… Fill the blanks with respect to A and B. choose the correct option
  •   A-Aristotle; B-anatomical characters
  •   A-Linnaeus; B-cytological information
  •   A-Linnaeus; B-morphological characters
  •   A-Haeckel; B-morphological characters
Solution
  (c) Artificial system of classification was given by Linnaeus and based on morphological characters such as habit, colour, number and shape of leaves, etc

Q6.  Both heterospory and circinate ptyxis occur in
  •   dryopteris
  •   pinus
  • cycas
  •   funaria
Solution
dryopteris has circinate vernation of leaves but is homosporous. Circinate vernation and heterospory is found in cycas

Q7. A microsporophyll in pinus has
  •  One microsporangium on the adaxial side
  •  One microsporangium on the abaxial side
  •   Two microsporangia on the abaxial side
  •   Two microsporangia on the adaxial side
Solution
(c) The microsporophyll is a brown coloured triangular structure consisting of a short stalk or filament and leaf like flattened structure or ‘anther’. Each sporophyll is provided with two microsporangia on its abaxial surface.

Q8. Oogamous means
  •   Fusion between female and male gametes. Both are similar in size
  •   Fusion between one large female gamete and a smaller non-motile male gamete
  •   Fusion between one large female gamete and a smaller motile male gamete
  •   Fusion between one smaller female gamete and a large motile male gamete
Solution
Fusion of a large non-motile egg or ovum with a smaller motile sperm (except in Rhodophyceae). The gametes differ morphologically as well as physiologically and are called oogametes. The fusion of gametes is called oogamy, ., Chlamydomonas, Fucus, Chara and Volvox

Q9. The moss plant is
  •   Sometimes gametophyte and sometimes sporophyte
  •   Predominantly gametophyte with sporophyte attached to it
  •   Gametophyte
  •   Sporophyte
Solution
(b) The haploid gametophyte is dominant, long lived, green and independent whereas the diploid sporophyte is short lived and dependent upon the gametophyte

Q10. In the alternation of generations the sporophytic generations is …A… and the gametophytic generation is …B… . Here A and B refer to
  •  A-2n; B-n
  •   A-n; B-2n
  •   A-n; B-n
  • A-2n; B-2n
Solution
(a) In the alternation of generations the sporophytic generation is 2 and the gametophytic generation is

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