quiz15 plant kingdom

Plant Kingdom Quiz-15

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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.  Cycas stem shows

•   Porous wood
•  Manoxylic wood
•   Pycnoxylic wood
•   Ring porous wood

Solution
stem shows large amount of parenchyma with secondary xylem tracheids. This type of wood is soft wood/manoxylic wood.

Q2. A bryophyte, which harbours a nitrogen fixing blue-green alga in its thallus, is

•  poganatum
•   riccia
•   marchantia
•   anthoceros

Solution
is a hornwort (bryophyte) that harbours a nitrogen fixing blue-green algae in its mucilage cavities. The association of and is highly specialized form of symbiosis.

Q3.   Two very distinst generations are found in the life cycle of

•   Bacteria
•   Spirogyra
•  Volvox
•   Ferns

Solution
Ferns exhibit alternation of dominant sporophyte generation with an inconpicuous gametophyte generation (heteromorphic)

Q4.  Haploid brown, hairlike, delicate unicellular outgrowths are

•   Root hairs of gymnosperms
•   Paraphysis of mosses
•   Root nodules of pulses
•   Rhizoids of fern plants

Solution
The haploid unicellular spore of fern on germination forms prothallus, which possesses haploid, brown, hairlike delicate unicellular outgrowths. These are called rhizoids.

Q5. Identify the given figures of algae and select the correct option

•   A-Volvox, B-Chlamydomonas, C-Chara, D-Porphyra
•   A-Fucus, B- Polysiphonia, C-Porphyra, D-Dictyota
•  A-Fucus, B-Dictyota,, C-Porphyra, D-Polysiphonia
•   A- Dictyota, B-Porphyra, C-Fucus, D-Polysiphonia

Solution
  (b) A-Fucus, B-Polysiphonia, C-Porphyra, D-Dictyota

Q6.  Sago starch is obtained from

•   Cedrus
•   Taxus
• Pinus
•   Cycas

Solution
(a) Sago starch is obtained from Pinus

Q7. In brown algae asexual reproduction takes place by

•   Aplanospores (apple-shaped and non-motile)
•  Biflagellate gametes (pear-shaped and have two unequal flagella)
•   Endospores (round and have one flagella)
•   Multifilagellate gametes and are sickle-shaped

Solution
(b) In brown algae asexual reproduction takes place by the formation of motile zoospores and non-motile neutral spores. The zoospores are usually produced inside the zoosporangia. They are pyriform, biflagellate and have chromatophores, contractile vacuoles and eye spot. They have heterokont flagellations, i.e., possess two unequal flagella, one whiplash type and the other tinsel-shaped

Q8. Moss peat s used as a packing material for sending flowers and live plants to distant places because

•  It is easily available
•   It is hygroscopic
•  It reduces transpiration
•   It serves as a disinfectant

Solution
sphagnum is bryophyte, commonly called as bog moss or peat moss. It is hygroscopic and possesses a remarkable water holding capacity. Hence, it is used as a packing material in the transportation of flowers, live plants, tubers, bulbs, seedlings, etc. It is also used in seedbeds and in moss-sticks.

Q9. Consider the following statements regarding reproduction in class-Chloropyceae. I. Asexual reproduction is mainly by flagellated zoospores produced in zoosporangia. II. The sexual reproduction shows considerable variation in the type and formation of sex cells and it may be isogamous, anisogamous and oogamous. Which of the statements given above are correct?

•   Only I
•   Only II
•   I and II
•   None of these

Solution
Asexual reproduction is by flagellated zoospores produced in zoosporangia. The sexual reproduction shows considerable variation in the type and formation of sex cells and it may be isogamous, anisogamous or oogamous. In isogamy, gametes are morphologically and physiologically different but physiologically same and in oogamy, gametes are both morphologically and physiologically different, ., Ulothrix and Spirogyra members of Chlorophyceae

Q10.  Which of the following is the amphibians of the plant kingdom?

•   Angiosperms
•   Pteridophytes
•   Gymnosperm
• Byrophytes

Solution
(d) Bryophytes are also known as amphibians of plant kingdom. They have various features, which enabled them to live on both land and on water habitats