41. The common name refers to the elongated horn-like structure, which is the sporophyte . 42. The sporophyte of most hornworts are also photosynthetic, which is not the case with liverworts. 43. Juvenile and dormant sporophytes can also be hidden in the soil for long periods of time. 44. This means that new sporophytes can usually grow from the gametophyte formed from a single spore. 45. Fertilisation follows and the zygote develops, settles and grows directly into the diploid sporophyte plant. 46. In bryophytes, the sporophyte is always unbranched and remains nutritionally dependent on its parent gametophyte. 47. The species has a chromosome number of 144 in the sporophyte , indicating an allotetraploid origin. 48. When these diploid spores fertilized one another, they formed allotetraploid zygotes that grew into sporophytes . 49. The species has a chromosome number of 144 ( 2 ?72 ) in the sporophyte . 50. A mature animal is diploid and so is, in one sense, equivalent to a sporophyte .
