Which of the following fern is an excellent biofertilizer? (a) Marsilea (b) Pteridium (c) Azolla (d) Salvinia

Which of the following fern is an excellent
biofertilizer?
(a) Marsilea (b) Pteridium
(c) Azolla (d) Salvinia
by

1 Answer

Answer :

(c) Azolla
by

Related questions

Which aquatic fern is used to increase the yield in paddy crop? (a) Azolla (b) Salvinia (c) Marsilea (d) Isoetes

Description : Which aquatic fern is used to increase the yield in paddy crop? (a) Azolla (b) Salvinia (c) Marsilea (d) Isoetes

Last Answer : (a) Azolla

A water-fern, which is used as a green manure in rice fields, is (a) Salvinia (b) Mucor (c) Aspergillus (d) Azolla

Description : A water-fern, which is used as a green manure in rice fields, is (a) Salvinia (b) Mucor (c) Aspergillus (d) Azolla

Last Answer : (d) Azolla

Which aquatic fern performs nitrogen fixation? (a) Azolla (b) Nostoc (c) Salvia (d) Salvinia

Description : Which aquatic fern performs nitrogen fixation? (a) Azolla (b) Nostoc (c) Salvia (d) Salvinia

Last Answer : (a) Azolla

Farmers have reported over 50% higher yields of rice by using which of the following biofertilizer? (a) Cyanobacteria(b) legume-Rhizobium symbiosis (c) Mycorrhiza (d) Azolla pinnata

Description : Farmers have reported over 50% higher yields of rice by using which of the following biofertilizer? (a) Cyanobacteria (b) legume-Rhizobium symbiosis (c) Mycorrhiza (d) Azolla pinnata

Last Answer : (d) Azolla pinnata

Ectophloic siphonostele is found in (a) Osmunda and Equisetum (b) Marsilea and Botrychium (c) Adiantum and Cucurbitaceae (d) Dicksonia and Maiden hair fern

Description : Ectophloic siphonostele is found in (a) Osmunda and Equisetum (b) Marsilea and Botrychium (c) Adiantum and Cucurbitaceae (d) Dicksonia and Maiden hair fern

Last Answer : (a) Osmunda and Equisetum

Which of the following is used as Biofertilizer? a) Rhizobium b) Blue-green algae c) Azolla d) All of these

Description : Which of the following is used as Biofertilizer? a) Rhizobium b) Blue-green algae c) Azolla d) All of these

Last Answer : d) All of these

A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is (a) Tolypothrix (b) Chlorella (c) Nostoc (d) Anabaena.

Description : A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is (a) Tolypothrix (b) Chlorella (c) Nostoc (d) Anabaena.

Last Answer : (d) Anabaena.

Azolla pinnata is a). a fern b). an algae c). a gymnosperm d). an angiosperm

Description : Azolla pinnata is a). a fern b). an algae c). a gymnosperm d). an angiosperm

Last Answer : a). a fern

Flagellated male gametes are present in all the three of which one of the following sets? (a) Zygnema, Saprolegnia and Hydrilla (b) Fucus, Marsilea and Calotropis (c) Riccia, Dryopteris and Cycas (d) Anthoceros, Funaria and Spirogyra

Description : Flagellated male gametes are present in all the three of which one of the following sets? (a) Zygnema, Saprolegnia and Hydrilla (b) Fucus, Marsilea and Calotropis (c) Riccia, Dryopteris and Cycas (d) Anthoceros, Funaria and Spirogyra

Last Answer : (c) Riccia, Dryopteris and Cycas

How does Mycorrhiza serve as a biofertilizer? -Biology

Description : How does Mycorrhiza serve as a biofertilizer? -Biology

Last Answer : answer:

How does Rhizobium serve as a biofertilizer? -Biology

Description : How does Rhizobium serve as a biofertilizer? -Biology

Last Answer : answer:

Which algae is used as biofertilizer in the production of crop paddy? -Do You Know?

Description : Which algae is used as biofertilizer in the production of crop paddy? -Do You Know?

Last Answer : answer:

Zinc solubilizing bacterial biofertilizer is

Description : Zinc solubilizing bacterial biofertilizer is

Last Answer : Ans. Azozink

Which algae is used as biofertilizer in the production of crop paddy?

Description : Which algae is used as biofertilizer in the production of crop paddy?

Last Answer : Blue green algae

Which of the following is non-symbiotic biofertilizer? (a) Anabaena (b) Rhizobium (c) VAM (d) Azotobacter

Description : Which of the following is non-symbiotic biofertilizer? (a) Anabaena (b) Rhizobium (c) VAM (d) Azotobacter

Last Answer : (d) Azotobacter

Which one of the following pairs is not correctly matched? (a) Streptomyces - Antibiotic (b) Serratia - Drug addiction (c) Spirulina - Single cell protein (d) Rhizobium - Biofertilizer

Description : Which one of the following pairs is not correctly matched? (a) Streptomyces - Antibiotic (b) Serratia - Drug addiction (c) Spirulina - Single cell protein (d) Rhizobium - Biofertilizer

Last Answer : b) Serratia - Drug addiction

An organism used as a biofertilizer for raising soybean crop is (a) Azotobacter (b) Azospirillum (c) Rhizobium (d) Nostoc.

Description : An organism used as a biofertilizer for raising soybean crop is (a) Azotobacter (b) Azospirillum (c) Rhizobium (d) Nostoc.

Last Answer : (c) Rhizobium

Which one is not biofertilizer ? (A) Multiflex (B) PSB (C) Vermicompost (D) NADEP

Description : Which one is not biofertilizer ? (A) Multiflex (B) PSB (C) Vermicompost (D) NADEP

Last Answer : (A) Multiflex

Main function of biofertilizer is— (A) To increase chemical process (B) To increase physiological process (C) To increase biological process (D) To increase photosynthesis process

Description : Main function of biofertilizer is— (A) To increase chemical process (B) To increase physiological process (C) To increase biological process (D) To increase photosynthesis process

Last Answer : (C) To increase biological process

Which of the following is Phosphate solubilizing biofertilizer a. Aspergillusb. Rhizopusc. Psudomonasd. All of these

Description : Which of the following is Phosphate solubilizing biofertilizer a. Aspergillus b. Rhizopus c. Psudomonas d. All of these

Last Answer : d. All of these

Main function of biofertilizer is a) To increase chemical process b) To increase physiological process c) To increase biological process d) To increase photosynthesis process

Description : Main function of biofertilizer is a) To increase chemical process b) To increase physiological process c) To increase biological process d) To increase photosynthesis process 

Last Answer : c) To increase biological process 

Select the biofertilizer in the following : (1) Compost (2) Ammonium sulphate (3) Cattle dung (4) Algae and blue-green algae

Description : Select the biofertilizer in the following : (1) Compost (2) Ammonium sulphate (3) Cattle dung (4) Algae and blue-green algae

Last Answer : Algae and blue-green algae

.Consider the following four statements whether they are correct or wrong. A. The sporophyte in liverworts is more elaborate than that in mosses. B. Salvinia is heterosporous. C. The life-cycle in all seed-bearing plants is diplontic. D. In Pinus, male and female cones are borne on different trees. The two wrong statements together are (a) A and C (b) A and D (c) B and C (d) A and B

Description : .Consider the following four statements whether they are correct or wrong. A. The sporophyte in liverworts is more elaborate than that in mosses. B. Salvinia is heterosporous. C. The life-cycle in all seed-bearing plants is diplontic ... are (a) A and C (b) A and D (c) B and C (d) A and B

Last Answer : (b) A and D

.Which one of the following pairs is wrongly matched? (a) Ginkgo – Archegonia (b) Salvinia – Prothallus (c) Viroids – RNA (d) Mustard – Synergids

Description : .Which one of the following pairs is wrongly matched? (a) Ginkgo – Archegonia (b) Salvinia – Prothallus (c) Viroids – RNA (d) Mustard – Synergids

Last Answer : (b) Salvinia – Prothallus

Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct? A B C D (a) Chara Marchantia Fucus Pinus (b) Equisetum Ginkgo Selaginella Lycopodium (c) Selaginella Equisetum Salvinia Ginkgo (d) Funaria Adiantum Salvinia Riccia

Description : Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct? A B C D (a) Chara Marchantia Fucus Pinus (b) Equisetum Ginkgo Selaginella Lycopodium (c) Selaginella Equisetum Salvinia Ginkgo (d) Funaria Adiantum Salvinia Riccia

Last Answer : (c) Selaginella Equisetum Salvinia Ginkgo

Select the correct statement. (a) Sequoia is one of the tallest trees. (b) The leaves of gymnosperms are not well adapted to extremes of climate.(c) Gymnosperms are both homosporous and heterosporous. (d) Salvinia, Ginkgo and Pinus all are gymnosperms.

Description : Select the correct statement. (a) Sequoia is one of the tallest trees. (b) The leaves of gymnosperms are not well adapted to extremes of climate. (c) Gymnosperms are both homosporous and heterosporous. (d) Salvinia, Ginkgo and Pinus all are gymnosperms.

Last Answer : (a) Sequoia is one of the tallest trees.

Select the mismatch. (a) Cycas – Dioecious (b) Salvinia – Heterosporous (c) Equisetum – Homosporous (d) Pinus – Dioecious

Description : Select the mismatch. (a) Cycas – Dioecious (b) Salvinia – Heterosporous (c) Equisetum – Homosporous (d) Pinus – Dioecious

Last Answer : (d) Pinus – Dioecious

Which of the following statements is correct? (a) Ovules are not enclosed by ovary wall in gymnosperms. (b) Selaginella is heterosporous, while Salvinia is homosporous. (c) Horsetails are gymnosperms. (d) Stems are usually unbranched in both Cycas and Cedrus.

Description : Which of the following statements is correct? (a) Ovules are not enclosed by ovary wall in gymnosperms. (b) Selaginella is heterosporous, while Salvinia is homosporous. (c) Horsetails are gymnosperms. (d) Stems are usually unbranched in both Cycas and Cedrus.

Last Answer : (a) Ovules are not enclosed by ovary wall in gymnosperms.

Which one of the following is heterosporous? (a) Adiantum (b) Equisetum (c) Dryopteris (d) Salvinia

Description : Which one of the following is heterosporous? (a) Adiantum (b) Equisetum (c) Dryopteris (d) Salvinia

Last Answer : (d) Salvinia

Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte lacks archegonia (c) megaspores possess endosperm and embryo surrounded by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.

Description : Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte ... by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.

Last Answer : (b) female gametophyte lacks archegonia

The plant body is thalloid in (a) Sphagnum (b) Salvinia (c) Marchantia (d) Funaria.

Description : The plant body is thalloid in (a) Sphagnum (b) Salvinia (c) Marchantia (d) Funaria.

Last Answer : (c) Marchantia

Strobili cones are found in (a) Salvinia (b) Pteris (c) Marchantia (d) Equisetum.

Description : Strobili cones are found in (a) Salvinia (b) Pteris (c) Marchantia (d) Equisetum.

Last Answer : (d) Equisetum.

Aquatic weed act as alternate host and vectors of malaria, yellow and dengue fever is a). Water lettuce b). Salvinia c). Alligator weed d). All of these

Description : Aquatic weed act as alternate host and vectors of malaria, yellow and dengue fever is a). Water lettuce b). Salvinia c). Alligator weed d). All of these

Last Answer : d). All of these

Select the mismatch (1) Cycas – Dioecious (2) Salvinia – Heterosporous (3) Equisetum – Homosporous (4) Pinus – Dioecious

Description : Select the mismatch (1) Cycas – Dioecious (2) Salvinia – Heterosporous (3) Equisetum – Homosporous (4) Pinus – Dioecious

Last Answer : (4) Pinus – Dioecious

Which of the following statement is correct ? (1) Ovules are not enclosed by ovary wall in gymnosperms (2) Selaginella is heterosporous, while Salvinia is homosporous (3) Horsetails are gymnosperms (4) Stems are usually unbranched in both Cycas and Cedrus

Description : Which of the following statement is correct ? (1) Ovules are not enclosed by ovary wall in gymnosperms (2) Selaginella is heterosporous, while Salvinia is homosporous (3) Horsetails are gymnosperms (4) Stems are usually unbranched in both Cycas and Cedrus

Last Answer : (1) Ovules are not enclosed by ovary wall in gymnosperms

Is it possible to purchase Azolla seeds?

Description : Is it possible to purchase Azolla seeds?

Last Answer : they use it in warm area to fertilize rice paddies. I guess it depends on where you live if it will grow. Also will spread and used for animals. This is in the fern family, does not have flowers.

Azolla increases soil fertility for – (1) maize cultivation (2) wheat cultivation (3) barley cultivation (4) rice cultivation

Description : Azolla increases soil fertility for – (1) maize cultivation (2) wheat cultivation (3) barley cultivation (4) rice cultivation

Last Answer : (4) rice cultivation Explanation: The nitrogen-fixing capability of Azolla has led to it being widely used as a biofertiliser for increasing the productivity of rice fields. When rice paddies ... can be inoculated with Azolla., which then quickly multiplies to cover the water, suppressing weeds.

The smallest flowering plant is - (1) Wolffia (2) Lemma (3) Azolla (4) Ficus

Description : The smallest flowering plant is - (1) Wolffia (2) Lemma (3) Azolla (4) Ficus

Last Answer : (1) Wolffia Explanation: Wolffia is a genus of 9 to 11 species which include the smallest flowering plants on Earth. Commonly called watermeal or duckweed, these aquatic plants resemble specks of ... together in pairs or form floating mats with related plants, such as Lemna and Spirodela species.

The second stage of hydrosere is occupied by plants like (a) Azolla (b) Typha (c) Salix (d) Vallisneria.

Description : The second stage of hydrosere is occupied by plants like (a) Azolla (b) Typha (c) Salix (d) Vallisneria.

Last Answer : (d) Vallisneria.

The biofertilizers are (a) Anabaena and Azolla (b) cow dung, manure and farmyard waste (c) quick growing crop ploughed under soil (d) none of these.

Description : The biofertilizers are (a) Anabaena and Azolla (b) cow dung, manure and farmyard waste (c) quick growing crop ploughed under soil (d) none of these.

Last Answer : (a) Anabaena and Azolla

Which of the following is the pair of biofertilizers? (a) Azolla and BGA (b) Nostoc and legume (c) Rhizobium and grasses (d) Salmonella and E.coli

Description : Which of the following is the pair of biofertilizers? (a) Azolla and BGA (b) Nostoc and legume (c) Rhizobium and grasses (d) Salmonella and E.coli

Last Answer : (a) Azolla and BGA

Which one of the following plants are used as green manure in crop fields and in sandy soils? (a) Crotalaria juncea and Alhagi camelorum (b) Calotropis procera and Phyllanthus niruri (c) Saccharum munja and Lantana camara (d) Dichanthium annulatum and Azolla nilotica

Description : Which one of the following plants are used as green manure in crop fields and in sandy soils? (a) Crotalaria juncea and Alhagi camelorum (b) Calotropis procera and Phyllanthus niruri (c) Saccharum munja and Lantana camara (d) Dichanthium annulatum and Azolla nilotica

Last Answer : (a) Crotalaria juncea and Alhagi camelorum

A nitrogen-fixing microbe associated with Azolla in rice fields is (a) Spirulina (b) Anabaena (c) Frankia (d) Tolypothrix.

Description : A nitrogen-fixing microbe associated with Azolla in rice fields is (a) Spirulina (b) Anabaena (c) Frankia (d) Tolypothrix.

Last Answer : (b) Anabaena

Which of the following organisms is used as a biopesticide ? (l) Azolla (2) Anabaena (3) Rhizobium (4) Trichoderma

Description : Which of the following organisms is used as a biopesticide ? (l) Azolla (2) Anabaena (3) Rhizobium (4) Trichoderma

Last Answer : (4) Trichoderma

Besides providing N Azolla is used for weed control in a). Wheat b). Rice c). Castor d). Linseed

Description : Besides providing N Azolla is used for weed control in a). Wheat b). Rice c). Castor d). Linseed

Last Answer : b). Rice

A nitrogen-fixing microbe associated with Azolla in rice fields is (1) Tolypothrix (2) Spirulina (3) Anabaena (4) Frankia

Description : A nitrogen-fixing microbe associated with Azolla in rice fields is (1) Tolypothrix (2) Spirulina (3) Anabaena (4) Frankia

Last Answer : (3) Anabaena

Azolla increases soil fertility for (1) maize cultivation (2) wheat cultivation (3) barley cultivation (4) rice cultivation

Description : Azolla increases soil fertility for (1) maize cultivation (2) wheat cultivation (3) barley cultivation (4) rice cultivation

Last Answer : rice cultivation

The smallest flowering plant is : (1) Wolffia (2) Lemma (3) Azolla (4) Ficus

Description : The smallest flowering plant is : (1) Wolffia (2) Lemma (3) Azolla (4) Ficus

Last Answer : Wolffia

What kind of contrast is there between fern green and yellow green?

Description : What kind of contrast is there between fern green and yellow green?

Last Answer : https://en.wikipedia.org/wiki/Shades_of_green

What does a fiddlehead fern taste like?

Description : What does a fiddlehead fern taste like?

Last Answer : answer:Get em when they’re four to six inches high. Clean out the brown stuff and treat like asparagus. Little salt butter and maybe a touch of vinegar. or Saute If they are not cleaned properly and are undercooked they can do nasty things to your belly.