Chapter 3

In gymnosperms (a) Pollen grains germinate inside the ovary. (b) The development of pollen grain takes place within the microsporangia. (c) The cones barring megasporophylls are called male cones or male strobili. (d) All are correct

Megaspore mother cell (a) Develops from one of the cell of nucleus (b) Forms four megaspore after meiosis (c) Formed in the megasporangium (d) All of these

The female gametophyte of gymnosperms (a) Bear two archegonia (b) Retained within megasporangium (c) Is unicellular (d) Both (a) and (b)

In gymnosperms, the male and female gametophyte I. Do not have independent free living existence. II. Remain within the sporangia retained on parent sporophyte. III. May be born on same or different tree. IV. Perform meiosis to produce gametes. (a) I and II (b) II and III (c) III and IV (d) All

Pollination in gymnosperms takes place by (a) Wind (b) Water (c) Only physical factors like wind and water (d) All of these

Angiosperms include (a) Vascular plants with naked seeds (b) Vascular plants with covered seeds (c) Few vascular plants with naked seeds (d) Few vascular plants with covered seeds

Microscopic angiosperm is (a) Sequoia (b) Eucalyptus (c) Wolfia (d) Never microscopic

Angiosperms include (a) Massive woody trees (b) Shrubs and herbs (c) Ranges from tiny microscopic plants to tall trees (d) None of these

The height of eucalyptus tree is approximately (a) \(100 \mathrm{~m}\) (b) \(1000 \mathrm{~m}\) (c) \(10 \mathrm{~m}\) (d) \(10-20 \mathrm{~m}\)

Male sex organ in angiosperm is located in (a) Male cone (b) Sporophyll (c) Flower (d) Carpel

Male sex organ in flower is (a) Antheridia (b) Stamens (c) Spermatangia (d) Nucule

The female sex organ of flower is called (a) Archegonia (b) Nucule (c) Oogonia (d) Pistil

The pistil in flower encloses (a) One ovule (b) Only two ovules (c) Three ovules (d) One too many ovules

Embryo sacs in angiosperms is (a) Male gametophyte (b) Well-developed female gametophyte (c) Highly reduced female gametophyte (d) Well-developed female sporophyte

Embryo sac of angiosperms posses (a) Egg apparatus (b) Synergids (c) Antipodal (d) All of these

Egg apparatus of angiosperms contain (a) One egg cell (b) Two synergids (c) Both (a) and (b) (d) Two antipodals

The cells of embryo sac are (a) Diploid (b) Haploid (c) May be haploid or diploid (d) None of these

Diploid secondary nucleus in embryo sac of angiosperm is the product of (a) Fusion of two synergid cells (b) Fusion of two antipodal cells (c) Fusion of two polar nuclei (d) Fusion of egg cell and antipodal cell

The pistil in angiosperm is made up of (a) Ovary (b) Stigma (c) Style (d) All of these

Ovary is the characteristic feature of (a) Gymnosperms (b) Angiosperm (c) Pteridophyte (d) All of these

In double fertilization (a) Male gamete fuses with egg cell to form zygote. (b) Male gamete fuses with diploid endosperm nucleus to produce triploid primary endosperm nucleus. (c) Both (a) and (b) (d) Fertilization takes place in two plants simultaneously.

Synergids and antipodals (a) Develop into new plants (b) Are diploid (c) Degenerate after fertilization (d) Are produced in male gametophyte

Fruit formation in angiosperm takes place by (a) Development of ovule after fertilization (b) Development of ovary after fertilization (c) Axillary bud (d) Terminal bud

Double fertilization is the unique characterisitic feature of (a) Angiosperm (b) Gymnosperm (c) Pteridophyte (d) Dicotyledons only

Zygote after multiplication in angiosperm develop in (a) Endosperm (n) (b) Embryo (n) (c) Endosperm (d) Embryo (2n)

Endosperm in angiosperm is formed (a) Before fertilization (b) After fertilization (c) Vary from species to species (d) All of these

Meiosis in plants can take place in (a) Only haploid species (b) Only diploid species (c) Both in haploid as well as diploid species (d) None of these

The haploid plant body produces and is referred to as (a) spores, sporophyte (b) gametes, gametophyte (c) zoospores, zoosporangia (d) conidia, conidiophores

Haploid spore divides by to form haploid plant body (a) Mitosis (b) Meiosis (c) Amitosis (d) Any of these

In haplontic life cycle, the sporophytic generation is seen by (a) Well-developed multicellular sporophyte (b) Zygote (b) Embryo (d) None of these

In haplontic life cycle, the zygote divides by (a) Mitosis (b) Meiosis (c) Any of these (d) Amitosis

Volvox, spirogyra chlamydomonas come under (a) Haplodiplontic life cycle organism (b) Diplohaplontic organism (c) Haplontic life cycle (d) Diplontic life cycle

Sporophyte, dominant, photosynthetic and independent phase of plant represents (a) Haplontic (b) Diplontic (c) Diplohaplontic life cycle (d) Both (b) and (c)

Diplontic life cycle is seen in (a) Angiosperms and gymnosperms (b) Spermatophytes (c) Both (a) and (b) (d) Pteridophyte

When both the phases of life cycle are multicellular, i.e., haploid and diploid phases are more than one celled (a) Life cycles are called haplodiplontic (b) They differ in the dominant phase (c) They are in pteridophytes and bryophytes (d) All of these

In bryophytes (a) Dominant, diploid, multicellular sporophyte alters dominant with multicellular gametophytes. (b) Dominant haploid multicellular gametophyte alters with diploid sporophyte. (c) The plant body shows diplontic life cycle. (d) The plant body shows haplontic life cycle.

Most of the alga show (a) Haplontic life cycle (b) Diplontic life cycle (c) Haplodiplontic life cycle (d) None of these

Algae showing haplodiplontic life cycle are (a) Spirullina and spirogyra (b) Ectocarpus and polysiphonia (c) Kelps (d) Both (b) and (c)

Which alga shows diplontic life cycle? (a) Chara (b) Fucus (c) Ectocarpus (d) Polysiphonia

How many organisms show haplodiplontic life cycle? Sphagnum, Volvox, Ulothrix, Marchantia, Polytrichum, Selaginella, Pinus, Cedrus, Ectocarpus, Polysiphonia (a) 8 (b) 6 (c) 7 (d) 9

How many organisms show diplontic life cycle? Selaginella, Equisetum, Cycas, Cedrus, Ectocarpus, Fucus, Sequoia (a) 7 (b) 5 (c) 4 (d) 6

Which of the organisms show haplontic life cycle? (a) Chlamydomonas, volvox (b) Ectocarpus, polysiphonia (c) Fucus (d) All of these

In diplontic life cycle gametogenesis takes place by (a) Mitosis (b) Meiosis (c) Both (a) and (b) (d) Neither mitosis nor meiosis

Gametogenesis in organism showing haplontic life cycle takes place in (a) Mitosis (b) Meiosis (c) Both (a) and (b) (d) Amitosis

Assertion: Cytotaxonomy is based on the cytological information like chromosome number, structure and behaviour. Reason: Chemotaxonomy that uses the chemical constituents of the plants.

Assertion: In some species of Chlamydomonas, the fusion of gamete is termed as anisogamous. Reason: Because gametes which undergo fusion in these species are of dissimilar in size.

Assertion: Bryophytes are called amphibian of plant kingdom. Reason: These plants live in soil but are dependent on water for sexual reproduction.

Assertion: Mosses along with lichens are the first organisms to colonize rocks. Reason: They decompose rocks by scereting acid substances.

Assertion: Pteridophytes are used for medicinal purposes and soil binders. Reason: They are the first terrestrial plants to possess vascular tissues.

Assertion: Only the red algae is able to flourish at the great depth of sea. Reason: Red algae has the pigments r-phycoerythrin and r-phycocyanin.