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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 2251. |
Largest number of chloroplast is found in: |
| A. | Palisade tissue |
| B. | Spongy tissue |
| C. | Transfusion tissue |
| D. | Bundle sheath cells |
| Answer» B. Spongy tissue | |
| 2252. |
Which one of the following option shows the correct labelling of the parts marked as 1, 2, 3 and 4 in the given figure of a typical dicot root? |
| A. | 1 - Primary phloem, 2 - Vascular cambium, 3 - Secondary phloem, 4 - Primary xylem |
| B. | 1 - Secondary phloem, 2 - Vascular cambium, 3 - Primary phloem, 4 - Primary xylem |
| C. | 1 - Primary phloem, 2 - Primary xylem, 3 - Secondary phloem, 4- Vascular cambium |
| D. | 1 - Secondary phloem, 2 - Primary xylem, 3 - Primary phloem, 4 - Vascular cambium |
| Answer» B. 1 - Secondary phloem, 2 - Vascular cambium, 3 - Primary phloem, 4 - Primary xylem | |
| 2253. |
Bamboo and grasses elongate by the activity of: |
| A. | Apical meristem |
| B. | Lateral meristem |
| C. | Secondary meristem |
| D. | Intercalary meristem |
| Answer» E. | |
| 2254. |
A dendrochronologist observed total 22 ring of spring wood and autumn wood in a dicot stem in 1998. How many annual rings will be observed by him in 2007? |
| A. | 21 |
| B. | 25 |
| C. | 20 |
| D. | 30 |
| Answer» D. 30 | |
| 2255. |
Red brasilin comes from which part of Caesalpinia sappan? |
| A. | Bark only |
| B. | Heart wood only |
| C. | Sap wood and bark |
| D. | Heart wood and bark |
| Answer» C. Sap wood and bark | |
| 2256. |
The heart wood of Acacia catechu is rich in: |
| A. | Gums |
| B. | Resins |
| C. | Tannins |
| D. | Mucilages |
| Answer» D. Mucilages | |
| 2257. |
Identify types of vascular bundles in given figures 1, 2 and 3. |
| A. | 1- Radial 2- Conjoint closed 3- Conjoint open |
| B. | 1- Conjoint closed 2- Conjoint open 3- Radial |
| C. | 1- Conjoint open 2- Conjoint 3- Radial |
| D. | 1- Bicol lateral 2- Concentric 3- Radial |
| Answer» B. 1- Conjoint closed 2- Conjoint open 3- Radial | |
| 2258. |
Which of the following plant shows multi epidermis? |
| A. | Croton |
| B. | Allium |
| C. | Nerium |
| D. | Cucurbita |
| Answer» D. Cucurbita | |
| 2259. |
A scion is grafted to a stock. The quality of fruits produced will be determined by the genotype of: |
| A. | Stock |
| B. | Scion |
| C. | Both stock and scion |
| D. | Neither stock nor scion |
| Answer» C. Both stock and scion | |
| 2260. |
In trees, the growth rings represent: |
| A. | Primary xylem |
| B. | Secondary xylem |
| C. | Secondary phloem |
| D. | Cambium |
| Answer» C. Secondary phloem | |
| 2261. |
"Bast-fibers" obtained from which part of woody stem? |
| A. | Cork |
| B. | Cortex |
| C. | Xylem |
| D. | Phloem |
| Answer» E. | |
| 2262. |
Collenchyma differs from Sclerenchyma in: |
| A. | having sclereids |
| B. | having thick walls |
| C. | having inside lumen |
| D. | retaining protoplasm at maturity |
| Answer» E. | |
| 2263. |
Lignin is a component of the secondary cell walls of: |
| A. | Epidermis |
| B. | Collenchyma |
| C. | Sclerenchyma |
| D. | Parenchyma |
| Answer» D. Parenchyma | |
| 2264. |
Root cap is not found in: |
| A. | Lithophytes |
| B. | Xerophytes |
| C. | Hydrophytes |
| D. | Mesophytes |
| Answer» D. Mesophytes | |
| 2265. |
The quiescent centre in root meristem serves as: |
| A. | region for absorption of water. |
| B. | reservoir of growth hormones. |
| C. | reserve for replenishment of damaged cells of the meristem. |
| D. | site for storage of food which is utilised during maturation. |
| Answer» D. site for storage of food which is utilised during maturation. | |
| 2266. |
Read the following statements and answer the questions. (i) It is made up of elongated, tapering cylindrical cells which have dense cytoplasm and nucleus. (ii) The cell wall is composed of cellulose and has pits through which Plasmodesmata connections exist between the cells. (iii) It is absent in most of the monocotyledons. Which part of plant tissue is being described by the above statements? |
| A. | Sieve tube elements |
| B. | Companion cells |
| C. | Phloem parenchyma |
| D. | Phloem fibres |
| Answer» D. Phloem fibres | |
| 2267. |
Which tissue is considered as most primitive both ontogenetically as well as phylogenetic ally? |
| A. | Parenchyma |
| B. | Collenchyma |
| C. | Sclerenchyma |
| D. | Aerenchyma |
| Answer» B. Collenchyma | |
| 2268. |
Which one of the following statement is correct about bull form/motor cell? |
| A. | It is seen in grasses. |
| B. | It is large-sized, thin-walled colourless, vacuolated cells on the ad axial surface. |
| C. | It helps in rolling of leaf to minimise water loss when it is flaccid. |
| D. | All of the above |
| Answer» E. | |
| 2269. |
Selaginella differs from Pteris (fern) in which of the following character [DPMT 1975; AFMC 1978, 84; AIIMS 1992; CMC Vellore 1993] |
| A. | Absence of seed |
| B. | Absence of vessels in xylem |
| C. | Need water for fertilization |
| D. | Heterosporous condition |
| Answer» E. | |
| 2270. |
In Selaginella male gametes are [MP PMT 2000] |
| A. | Aflagellated |
| B. | Monoflagellated |
| C. | Biflagellated |
| D. | Multiflagellated |
| Answer» D. Multiflagellated | |
| 2271. |
Antherozoids of Selaginella has [CBSE PMT 1990] |
| A. | Elongated body with many flagella |
| B. | An elongated body with two flagella at one end |
| C. | Top shaped body with many flagella |
| D. | Oval body with two flagella at one end |
| Answer» C. Top shaped body with many flagella | |
| 2272. |
Rhizophore of Selaginella is |
| A. | Positively geotropic |
| B. | Negatively geotropic |
| C. | Apogeotropic |
| D. | None of the above |
| Answer» B. Negatively geotropic | |
| 2273. |
Selaginella possesses and outgrowth proximally [BHU 2005] |
| A. | Ligule |
| B. | Indusium |
| C. | Stipule |
| D. | Petiole |
| Answer» B. Indusium | |
| 2274. |
Which of the following does not belong to Selaginella [BHU 1991] |
| A. | Ramenta |
| B. | Trabeculae |
| C. | Rhizophore |
| D. | Ligule |
| Answer» B. Trabeculae | |
| 2275. |
Polystelic stem is seen in [BHU 1989] |
| A. | Cycas |
| B. | Riccia |
| C. | Selaginella |
| D. | Funaria |
| Answer» D. Funaria | |
| 2276. |
The antherozoid of Selaginella has |
| A. | Elongated body with two flagella at one end |
| B. | Elongated body with many flagella at one end |
| C. | Top shaped body with many flagella |
| D. | Oval body with two flagella at one end |
| Answer» B. Elongated body with many flagella at one end | |
| 2277. |
Stele of Selaginella stem is |
| A. | Protostelic |
| B. | Eustelic |
| C. | Dictyostelic |
| D. | Solenostelic |
| Answer» B. Eustelic | |
| 2278. |
In Selaginella when sporophyte develops directly from female gametophyte other than oosphere, the condition is called |
| A. | Apospory |
| B. | Aplanospory |
| C. | Apogamy |
| D. | Cleistogamy |
| Answer» D. Cleistogamy | |
| 2279. |
Spores with chloroplast is present in [DPMT 2004] |
| A. | Selaginella |
| B. | Equisetum |
| C. | Puccinia |
| D. | Rhizopus |
| Answer» B. Equisetum | |
| 2280. |
Physiological heterospory is seen in [DPMT 2004] |
| A. | Chlamydomonas |
| B. | Rhizopus |
| C. | Selaginella |
| D. | Hycopodium |
| Answer» D. Hycopodium | |
| 2281. |
Which of the following is known as ?resurrection plant? [CPMT 1999; Haryana PMT 2005] |
| A. | Selaginella |
| B. | Welwitschia |
| C. | Refflesia |
| D. | Chlorella |
| Answer» B. Welwitschia | |
| 2282. |
In Selaginella, reduction division occurs during the formation of [CBSE PMT 1994; AIIMS 1998] |
| A. | Sperms |
| B. | Microspores only |
| C. | Megaspores only |
| D. | Both (b) and (c) |
| Answer» E. | |
| 2283. |
Rhizophore in Selaginella is [CET Pune 1998] |
| A. | A modified leaf |
| B. | A root |
| C. | A shoot |
| D. | Organ sui genesis |
| Answer» E. | |
| 2284. |
The main plant body of Selaginella sp. is [MP PMT 1997] |
| A. | Gametophyte |
| B. | Sporophyte |
| C. | Both gametophyte and sporophyte |
| D. | Halophyte |
| Answer» C. Both gametophyte and sporophyte | |
| 2285. |
Heteromorphic alternation of generations is found in [MP PMT 1998] |
| A. | Spirogyra |
| B. | Mucor |
| C. | Selaginella |
| D. | Pinus |
| Answer» D. Pinus | |
| 2286. |
Heterosporous condition and ligulate leaves are found in |
| A. | Funaria |
| B. | Selaginella |
| C. | All pteridophytes |
| D. | All bryophytes |
| Answer» C. All pteridophytes | |
| 2287. |
In Selaginella megaspores are about how many times larger than microspores |
| A. | Five times |
| B. | Ten times |
| C. | Twenty times |
| D. | Hundred times |
| Answer» E. | |
| 2288. |
The basis of seed habit in Selaginella is |
| A. | Heterospory |
| B. | Reduction in the number of megaspores |
| C. | Retention of a megaspores in the cone |
| D. | All the above |
| Answer» E. | |
| 2289. |
Selaginella is heterosporous. It produces two types of spores. The microspore develops into microgametophyte and the megaspore develops into megagametophyte. With respect to gametophyte, which one statement is correct |
| A. | The microgametophyte is devoid of chloro\[\sim \]phyll at maturity |
| B. | The megagametophyte possesses chlorophyll at maturity |
| C. | The megagametophyte develops within the walls of megaspore |
| D. | The microgametophyte develops chlorophyll at maturity |
| Answer» D. The microgametophyte develops chlorophyll at maturity | |
| 2290. |
In Selaginella tapetum originates from |
| A. | Wall of sporangium |
| B. | Sporogenous tissue |
| C. | Sporophyll |
| D. | Basal part of cone |
| Answer» C. Sporophyll | |
| 2291. |
Rhizophore in Selaginella is |
| A. | Exogenous in origin |
| B. | Endogenous in origin |
| C. | Internal in origin |
| D. | None of the above |
| Answer» B. Endogenous in origin | |
| 2292. |
Microsporangia and megasporangia are found in same strobilus in |
| A. | Fern |
| B. | Selaginella |
| C. | Pinus |
| D. | Moss |
| Answer» C. Pinus | |
| 2293. |
One character common for Selaginella and fern is |
| A. | Heterospory |
| B. | Protostele |
| C. | Development of sporangium |
| D. | Absence of ovule |
| Answer» E. | |
| 2294. |
Positively geotropic structure rhizophore of Selaginella is |
| A. | Root |
| B. | Stem |
| C. | A new organ called sui generis |
| D. | None of the above |
| Answer» D. None of the above | |
| 2295. |
Selaginella is characterized by the presence of |
| A. | Homospory |
| B. | Ligule |
| C. | Flowers |
| D. | None of the above |
| Answer» C. Flowers | |
| 2296. |
Ligulate leaves are found in [MHCET 2001] |
| A. | Mosses |
| B. | Selaginella |
| C. | Fern |
| D. | Pinus |
| Answer» C. Fern | |
| 2297. |
Adaxial outgrowth from the base of leaves in Selaginella is called [BHU 2005] |
| A. | Stipule |
| B. | Ligule |
| C. | Trabaculae |
| D. | Velum |
| Answer» C. Trabaculae | |
| 2298. |
The number of male prothellial cells in Selaginella are [MP PMT 1993] |
| A. | One |
| B. | Two |
| C. | Four |
| D. | Nil |
| Answer» B. Two | |
| 2299. |
The stem of Selaginella is anatomically characterised by the presence of [MP PMT 1994] |
| A. | Siphonostele |
| B. | Amphiphloic siphonostele |
| C. | Protostele |
| D. | Ectophloic siphonostele |
| Answer» D. Ectophloic siphonostele | |
| 2300. |
Which of the following is not common in Funaria and Selaginella [CBSE PMT 1994] |
| A. | Roots |
| B. | Archegonium |
| C. | Embryo |
| D. | Motile sperms |
| Answer» B. Archegonium | |