FREE NEET Biology Practice MCQ Test: Plant Kingdom Exercise 3 Questions Answers With Detailed Explanations [PDF]

Answer: (a)

Answer: (a)

Answer: (b)

Answer: (d)

Answer: (d)

Algae are a group of chlorophyllous, non- vascular plants with thallose plant body. Different algae show different pigments present in the cell like chlorophyll - a, b, xanthophylls, carotenes, etc. These pigments provide the base for classification of various groups of algae into different classes. Members of Chlorophyceae possess chlorophyll - a, b pigments, Bacillariophyceae contains diatomin pigment whereas that of Phaeophyceae has fucoxanthin, Rhodophyceae has r-phycocyanin and r-phycoerythrin and cyanophyceae has phycobilin pigment.

Answer: (c)

Kingdom Monera exclusively includes all forms of bacteria. All bacteria are prokaryotes and do not possess a well-defined nucleus and other cell organelles. Protista, Algae and Plantae include eukaryotic and unicellular or multicellular organisms.

Answer: (d)

Answer: (b)

Selaginella is a heterosporous pteridophyte. Corralloid roots of Cycas harbour blue green algae like Nostoc, Anabaena and are not a type of VAM (vesicular arbuscular mycorrhiza) which is a symbiotic association with fungus.

Answer: (d)

Chlamydomonas has flagellated gametes which are similar or dissimilar in size. In Volvox and Fucus, non-motile female gametes and motile male gametes are produced (oogamy). Spirogyra has gametes that are similar in size (isogamous) and are non-flagellated.

Answer: (d)

Answer: (a)

Answer: (b)

Answer: (b)

Nearly 50% of total carbon dioxide fixation of photosynthesis of world is carried out by algae.

Photosynthesis by algae releases oxygen in the immediate aquatic environment. It is essential for respiration of aquatic life. Algae are primary producers of food in large bodies of fresh, brackish and sea water

Answer: (c)

Sphagnum and Funaria belong to Class Bryopsida of Division Bryophyta. They are typically mosses. The plant body has radial symmetry and is essentially leafy. Salvinia belongs to Division Pteridophyta. It has a sporophyte plant body with true leaves, stem and roots. Marchantia belongs to Class Hepaticopsida of Division Bryophyta. They are also called liverworts. The plant body is a dorsoventrally flattened thallus.

Answer: (a)

Answer: (c)

Answer: (d)

Gametophyte of bryophytes bears protonemal and leafy stage. In gymnosperm, female gametophyte is not free living. Antheridiophores and archegoniophores are present in Marchantia which is a bryophyte. Origin of seed habit started in pteridophyte.

Answer: (b)

Answer: (a)

Answer: (d)

Transfusion tissue is a specialized tissue present on either side of midrib in between the palisade and spongy tissues of the leaf of Cycas and also in Pinus leaf at the sides of the sclerenchymtous region. It is made of horizontally arranged tracheids. These supply water and minerals to mesophyll tissue upto margins so that the mesophyll cells can carry out photosynthesis. It is of two types primary transfusion tissue present next to the midrib bundle and secondary transfusion tissue that runs upto margins of the leaf. In Pinus it consists of tracheids and albuminous cells.