Recent questions in Diversity in Living World

Classification of animals is based on all except:

asked Jan 3, 2014 by pady_1

1 answer

Syngamy and Triple fusion are respectively:

asked Jan 3, 2014 by pady_1

1 answer

In Bryophytes: 1. The plant body of liverworts is thalloid and dorsiventral. 2. The plant body of mosses have upright, slender axes bearing spirally arranged leaves. Regarding 1 and 2:

asked Jan 3, 2014 by pady_1

1 answer

Regarding Bryophytes incorrect one is:

asked Jan 3, 2014 by pady_1

1 answer

Regardnig Alternation of generations choose the incorrect one:

asked Jan 3, 2014 by pady_1

1 answer

Plant life cycle and alternation of generations: 1. The haploid plant body represents a gametophyte. 2. The haploid plant body produces gametes by meiosis. Regarding 1 and 2:

asked Jan 3, 2014 by pady_1

1 answer

In plants: Assertion (A): The body of a plant may be - haploid sporophyte and diploid gametophyte. Reason (R): In plants, both haploid and diploid cells can divide by mitosis. Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

Identify the correct statement:

asked Jan 3, 2014 by pady_1

1 answer

Identify the correct sequence:

asked Jan 3, 2014 by pady_1

1 answer

Each embryo-sac has a three-celled egg apparatus that includes –

asked Jan 3, 2014 by pady_1

1 answer

Angiosperms include:

asked Jan 3, 2014 by pady_1

1 answer

The male and the female gametophytes do not have an independent free-living existence and they remain within the sporangia retained on the sporophytes in

asked Jan 3, 2014 by pady_1

2 answers

In gymnosperms : 1.The megaspore mother cell is differentiated from few of the cells of the nucellus. 2.The nucellus is protected by envelopes and the composite structure is female cone. Regarding 1 and 2:

asked Jan 3, 2014 by pady_1

1 answer

In Gymnosperms : 1. The male or female cones or strobili may be borne on the same tree as in Pinus 2. In cycas male cones and megasporophylls are borne on different trees. Regarding 1 and 2:

asked Jan 3, 2014 by pady_1

1 answer

1. One of the angiosperms, the giant redwood tree Sequoia is one of the tallest tree species. 2. The leaves in gymnosperms are ill-adapted to withstand extremes of temperature, humidity and wind. Regarding 1 and 2:

asked Jan 3, 2014 by pady_1

1 answer

In conifers (Gymnosperms):

asked Jan 3, 2014 by pady_1

1 answer

Gymnosperms include:

asked Jan 3, 2014 by pady_1

1 answer

The gymnosperms are plants in which:

asked Jan 3, 2014 by pady_1

1 answer

The pteridophytes are further classified into following classes except:

asked Jan 3, 2014 by pady_1

1 answer

Assertion (A): The spread of pteridophytes is unrestricted and have spread to many geographical regions Reason (R): The gametophytes of pteridophytes require cool, damp, shady places to grow and need for water for fertilisation Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

In pteridophytes: 1. The sporangia produce spores by meiosis in spore mother cells. 2. The spores germinate to give rise to small, multicellular,free-living, mostly photosynthetic thalloid gametophytes called prothallus. Regarding 1 and 2:

asked Jan 3, 2014 by pady_1

1 answer

Choose the incorrect statement:

asked Jan 3, 2014 by pady_1

1 answer

Pteridophytes include:

asked Jan 3, 2014 by pady_1

1 answer

Pteridophytes are used for:

asked Jan 3, 2014 by pady_1

1 answer

Choose the odd one out:

asked Jan 3, 2014 by pady_1

1 answer

1. The sporophyte in liverworts is more elaborate than that in mosses. 2. The mosses have an elaborate mechanism of spore dispersal. Regarding 1 and 2:

asked Jan 3, 2014 by pady_1

1 answer

The predominant stage of the life cycle of a moss is the gametophyte which consists of

asked Jan 3, 2014 by pady_1

1 answer

Regarding liverworts : 1. The plant body of a liverwort is thalloid - dorsiventral and closely appressed to the substrate. 2. The leafy members have tiny leaf-like appendages in two rows on the stem-like structures.

asked Jan 3, 2014 by pady_1

1 answer

Assertion (A): Species of Sphagnum, a moss, is used as packing material for trans-shipment of living material Reason (R): They have capacity to hold water. Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

1. Regarding the economic importance of mosses: Species of Sphagnum, a moss:

asked Jan 3, 2014 by pady_1

1 answer

Assertion (A): Mosses prevent soil erosion. Reason (R): Mosses form dense mats on the soil, they reduce the impact of falling rain Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

Assertion (A): The main plant body of the bryophyte is called a gametophyte. Reason (R): The main plant body of the bryophyte is diploid. It produces gametes after meiosis Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

1. Bryophytes play an important role in plant succession on bare rocks or soil. 2. The plant body of bryophytes is more differentiated than that of algae. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

Assertion (A):Bryophytes are also called amphibians of the plant kingdom Reason (R): Bryophytes can grow in both soil and water Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

Bryophytes are found commonly growing:

asked Jan 3, 2014 by pady_1

1 answer

Regarding Floridean starch:

asked Jan 3, 2014 by pady_1

1 answer

In Rhodophyceae:

asked Jan 3, 2014 by pady_1

1 answer

Assertion (A):The members of rhodophyceae predominantly have r-phycoerythrin in their body Reason (R): r-phycoerythrin, a red pigment gives them red colour hence commonly called red algae Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

Some commonly found green algae are all except:

asked Jan 3, 2014 by pady_1

1 answer

Some commonly found green algae are all except:

asked Jan 3, 2014 by pady_1

1 answer

The common member/s of Rhodophyceae are all except:

asked Jan 3, 2014 by pady_1

1 answer

The common form/s of Phaeophyceae are all except:

asked Jan 3, 2014 by pady_1

1 answer

The common member/s of Rhodophyceae are all except:

asked Jan 3, 2014 by pady_1

1 answer

The common member/s of Rhodophyceae are :

asked Jan 3, 2014 by pady_1

1 answer

The common form/s of Phaeophyceae are :

asked Jan 3, 2014 by pady_1

1 answer

In Phaeophyceae: Union of gametes may take place

asked Jan 3, 2014 by pady_1

1 answer

In Phaeophyceae: Union of gametes may take place within the oogonium

asked Jan 3, 2014 by pady_1

1 answer

Assertion (A): The members of phaeophyceae or brown algae vary in colour from olive green to various shades of brown Reason (R): Colour depends upon the amount of the xanthophyll pigment, fucoxanthin present in them Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

The members of phaeophyceae or brown algae are found primarily in :

asked Jan 3, 2014 by pady_1

1 answer

Some commonly found green algae are all except:

asked Jan 3, 2014 by pady_1

1 answer

Ask Questions, Get Answers