Autotrophic thallophytes are called as:
Which of the following is parasitic algae:
Red algae is red due to the presence of:
Carpogonia is the female sex organ in which of the algae?
Rhodophycophyta reproduce sexually heterogamously by the union of well-differentiated nonmotile male and female germ cells, the spermatia and carpogonia (female sex organs), respectively.
Protonema occurs in the life cycle of
Protonema represents the juvenile stage of moss (funaria). It is much-branched, green filamentous structure formed by the germination of spores, under favourable conditions.
The protonema consists of:
(a) some slender rhizoids.
(b) a number of aerial green prostrate branches bearing small lateral buds which grow up into new moss gametophores.
"Red rust of tea" is caused by parasitic:
Red rust disease of tea is caused by an alga Cephaleuros parasiticus Karst. The genus Cephaleuros is a parasitic green alga belonging to the family Trentepoholiaceae of the Division Chlorophyta in the algal kingdom.
Which algal groups have similarity in pigment composition?
Kelps belong to brown algae which carry almost the same pigments as in diatoms. one of them is fucoxanthin.
No Zoospore formation has been observed in the Algal members belonging to:
Plants which are not differentiated into roots, stem and leaves are grouped under
Thallophyta is that phylum of plant in which the thallus(body) is not differentiated into leaves, or stem, etc. They do not have a vascular bundles also.
Sargasso sea is named after an algae Sargassum which is a
Sargassum is a kind of brown algae which is a free floating algae. It has also got a name Gulf weed due to this property. It grows rapidly in North Atlantic ocean and covers thousands hectares of area, therefore this region is called as Sargasso Sea.
Zygotic meiosis is characteristic of:
Zygotic meiosis is a characteristic feature of Algae or Thallophytes.
So here are a few points about Zygotic meiosis:
Photosynthetic pigments common to all algae :-
Cyanobacteria are classified under
Cyanobacteria are classified under Kingdom Monera.
(i) Protista— unicellular eukaryotes
(ii) Plantae, all members of Kingdom Plantae are eukaryotic chloroplast chlorophyll containing organisms commonly called plants. These are autotrophic/holophytic.
Deepest algae in sea are :-
Phycobilins are characteristic pigments of :-
The two classes of phycobilins include phycocyanin and phycoerythrin. Phycocyanin is a bluish pigment found in primarily cyanobacteria (blue-green algae) to aid in absorption of light in photosynthesis, while phycoerythrin is a pigment found in Rhodopyta (red algae) that is responsible for its characteristic red color.
Which of the following plant groups have similar pigment composition :-
Both groups have Chlorophyll 'a' and similar accessory pigments such as β- carotenes, and phycobiliproteins. Both groups show thylakoids which occur singly as opposed to the stacked arrangement seen in other algal groups. Major food reserve of Cyanobacteria and Rhodophycean starch are quite similar to each other. Both groups have no flagellate forms.
Polyuronic acid and polysulphate esters are characteristic in cell wall of :-
Stone wort is common name of :–
Stonewort the common name for the brittle, calcified plants of the Charophyta; Chara and Nitella are the commonest British genera. The plant consists of a ‘stem’ or axis which bears whorls of branches at intervals (nodes) along its length. The axis is attached at its base to the substratum by means of branched rhizoids.
Irish moss, is a member of :–
Irish moss is a member of the red algae group.
It grows in cold water and is used in raw food recipes for nutrition and thickening properties. Irish Moss has been used for centuries in Ireland, thought it also grows in Asia and the oceans of North America. Raw foodists love Irish Moss for its use as a thickener, so it is a great addition to a raw vegan diet.
Flagellated cells are absent in :-
Which of the following is colour less parasitic red algae :-
Green algae are considered as ancestors of higher plants due to their resemblance with higher plants in :-
The correct answer is 'D' because the green algae consist of green pigment for photosynthesis, cell wall to protect from outer environment as it is present on the root nodes and, store water and then supplies to the plant.
The pyrenoids are made up of
Pyrenoids consist of dense proteinaceous area surrounded by starchy sheath. These are unique to chloroplast of algae and are associated in polymerising sugars into reserve polymers (starch).
In chlorophyta the mode of sexual reproduction is :-
The name "Thallophyta" was coined by:-
The term Thallophyta was coined by Endlicher. The organisms included in Thallophyta are algae, fungi, slime mould and bacteria.
Who is popularly known as the "Father of Phycology''
F.E. Fritsch (1935) divided algae into following eleven classes in his book "Structure and Reproduction of the Algae", mainly on the basis of pigmentation, reserve food and flagellation, thallus structure, modes of reproduction and life cycles and he is known as father of algae.
In thallophyta main plant body is:-
In thallophytes, plant body is simplest of all and is not differentiated into root, stem and leaf. Such a body is called as a thallus. Reproductive parts are unicellular and the main plant body is gametophyte.
The characters of thallophyta is/are :-
Characteristics of Thallophyta :
Sexual reproduction in Thallophyta takes place by:-
Thus, the correct and answer is option D.
Most advanced group of Algae is :-