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Test: Plant Kingdom 4 - From Past 28 Years Questions


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25 Questions MCQ Test Biology 31 Years NEET Chapterwise Solved Papers | Test: Plant Kingdom 4 - From Past 28 Years Questions

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Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 1

Which one is the most advanced from evolutionary point of view. [1993]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 1

Pinus is a conifer, a member of Gymnosperm has well developed conducting tissue and presence of seed, whereas Selaginella is a member of pteridophyte (Heterospory), Funaria is a moss, Chlamydomonas is an alga.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 2

The ‘wing’ of Pinus seed is derived from

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 2

The ovules matures into seed. Which is provided with wings. The upper surface of ovuliferous scale forms the membranous wings of the seed which helps in dispersal of the seed. The time taken from cone formation to seed dispersal is about two years in Pinus.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 3

Unique features of Bryophytes is that they

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 3

In bryophytes the plant body is gametophyte and sporophyte remain attached to the gametophyte and produces spores. Sporophyte is dependent on gametophyte.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 4

In Chlorophyceae, sexual reproduction occurs by [1994]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 4

In chlorophyceae, sexual reproduction takes place by all the three processes 1. Isogamy – Fusion of morphologically and physiologically similar gametes. 2. Anisogamy – Morphologically similar but physiologically dissimilar gametes. 3. Oogamy – Fusing gametes are dissimilar in all respect.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 5

Which of the following cannot fix nitrogen? [1994]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 5

Spirogyra is a member of green algae which cannot fix atmospheric nitrogen. Only Nostoc and Anabaena (Blue green algae) and Azotobacter (bacteria) can fix nitrogen.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 6

The absence of chlorophyll, in the lowermost cell of Ulothrix, shows [1995]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 6

Lowermost cell in Ulothrix functions as the holdfast. It is meant for attaching the filaments to the substratum which shows beginning of labour division.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 7

 Agar is commercially obtained from [1995]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 7

The Agar is obtained from several  members of red algae such as Gracilaria, Gelidium, Chondrus etc. Agar gels are extensively used for growing micro-organisms.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 8

The plant body of moss (Funaria) is [1995]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 8

The gametophtytic generation represents the dominant phase in  the life cycle of bryophytes. The sporophyte phase is dependent on the gametophyte. That is why, the plant body of Funaria is predominantly gametophyte with sporophyte.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 9

A well developed  archegonium with neck consisting of 4-6 rows of neck canal cells, characterises [1995]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 9

 Archegonia is the female sex organ of bryophytes and pteridophytes. Its neck region is made up of 4-6 vertical rows of cells.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 10

The ‘amphibians’ of plant kingdom are

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 10

 Archegonia is the female sex organ of bryophytes and pteridophytes. Its neck region is made up of 4-6 vertical rows of cells.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 11

In which one of these the elaters are present along with mature spores in the capsule (to help in spore dispersal)? [1996]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 11

In Marchantia capsule elaters are present which help in dispersal of spores.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 12

Seed-habit first originated in [1996]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 12

Seed habit originated in Cycadophiles or pteridosperms.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 13

Which one of the following is a living fossil? [1996, 97, 2003]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 13

Ginkgophyta  is an ancient group of which the sole living representative or living fossil is Ginkgo biloba or Maiden hair tree which is native of South China.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 14

Blue-green algae belong to [1996]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 14

Blue green algae or cyanobacteria come under Prokaryotes. Prokaryotes lack a well defined nucleus surrounded by nuclear membrane. Eukaryotes have well organised nucleus.     Rhodophyceae     &     Chlorophyceae     are members of algae which come under eukaryotes. 

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 15

An alga very rich in protein is [1997]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 15

Chlorella can be grown to provide human food rich in protein, lipid, carbohydrates, vitamins and minerals. Chlorella has been researched as a potential source of food and energy, because its efficiency of photosynthesis can reach 8%, this is comparable with other highly efficient crops such as sugar cane. It is high in protein and other essential nutrients. When dried, it is about 45 percent protein, 20 percent fat, 20 percent carbohydrate, 5% fiber, and 10 percent minerals and vitamins.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 16

Multicellular branched rhizoids and leafy gametophytes are characteristic of [1997]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 16

In pteridophytes, the gametophyte is independently living small thalloid structure called  prothallus. In pteridophytes the primary  roots are replaced by adventitious roots. Whereas in bryophytes the gametophyte is leafy.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 17

Ulothrix filaments produce [1997]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 17

Sexual reproduction in Ulothrix is isogamous type. Only similar type of gametes called isogametes are produced.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 18

Bryophytes can be separated from algae because they [1997]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 18

Archegonium is the flask shaped female sex organ in bryophytes while Algae have nonjacketed sex organs (gametangia).

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 19

Brown algae is characterised by the presence of[1997]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 19

Phycoerythrins  are accessory photosynthetic pigments along with phycocyanins. Haematochrome is a pigment in the blood. Brown algae is  brown due to fucoxanthin.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 20

Which one of the following statements about Cycas is incorrect? [1998]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 20

In  Cycas, conducting part of xylem consists of  tracheids.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 21

Ulothrix can be described as a [1998]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 21

Spirogyra is a filamentous alga lacking flagellated reproductive stages.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 22

Bryophytes are dependent on water because [1998]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 22

Bryophytes require a thin film of water on the surface of their substratum during sexual reproduction for the following  reasons : (i) dehiscence of antheridia  requires  absorption of water from outside (ii) dehiscence of archegonium (iii) swimming of sperms to reach the archegonia 

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 23

The “walking” fern is so named because

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 23

Vegetative reproduction occurs  in ferns by fragmentation of rhizome and growth of adventitious buds. In Adiantum  caudatum the adventitious buds occur at the leaf  tips  hence it is called the walking fern because of its ability to form new ferns whenever the leaf tip happens to come in contact with soil.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 24

Largest sperms in the plant world are found in[1998]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 24

The sperms of Cycas are the largest in the plant kingdom reaching a size of 300 mm . Egg of Cycas and its nucleus are also the largest in the plant kingdom.

Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 25

The antherozoids of Funaria are [1999]

Detailed Solution for Test: Plant Kingdom 4 - From Past 28 Years Questions - Question 25

Antherozoids of Funaria bear two flagella at anterior end and is spirally coiled.

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